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1222011030 = 235198872417
BaseRepresentation
bin100100011010110…
…0110100010010110
310011011102120222210
41020311212202112
510000313323110
6321131534250
742165631242
oct11065464226
93134376883
101222011030
1157787aa79
122a12ba386
13166230066
14b841d422
1572437520
hex48d66896

1222011030 has 64 divisors (see below), whose sum is σ = 3091944960. Its totient is φ = 308242944.

The previous prime is 1222011013. The next prime is 1222011031. The reversal of 1222011030 is 301102221.

It is a junction number, because it is equal to n+sod(n) for n = 1222010997 and 1222011015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222011031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504382 + ... + 506798.

It is an arithmetic number, because the mean of its divisors is an integer number (48311640).

Almost surely, 21222011030 is an apocalyptic number.

1222011030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222011030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545972480).

1222011030 is an abundant number, since it is smaller than the sum of its proper divisors (1869933930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222011030 is a wasteful number, since it uses less digits than its factorization.

1222011030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1222011030 is about 34957.2743502694. The cubic root of 1222011030 is about 1069.1165240601.

Adding to 1222011030 its reverse (301102221), we get a palindrome (1523113251).

The spelling of 1222011030 in words is "one billion, two hundred twenty-two million, eleven thousand, thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 887 1774 2417 2661 4435 4834 5322 7251 8870 12085 13305 14502 16853 24170 26610 33706 36255 45923 50559 72510 84265 91846 101118 137769 168530 229615 252795 275538 459230 505590 688845 1377690 2143879 4287758 6431637 10719395 12863274 21438790 32158185 40733701 64316370 81467402 122201103 203668505 244402206 407337010 611005515 1222011030