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1222013130 = 235134372869
BaseRepresentation
bin100100011010110…
…0111000011001010
310011011102200212120
41020311213003022
510000313410010
6321131552110
742165640332
oct11065470312
93134380776
101222013130
11577881608
122a12bb636
13166230cc0
14b84200c2
1572437e70
hex48d670ca

1222013130 has 64 divisors (see below), whose sum is σ = 3231930240. Its totient is φ = 293803776.

The previous prime is 1222013059. The next prime is 1222013137. The reversal of 1222013130 is 313102221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1222013137) 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, 19665 + ... + 53204.

It is an arithmetic number, because the mean of its divisors is an integer number (50498910).

Almost surely, 21222013130 is an apocalyptic number.

1222013130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222013130 is an abundant number, since it is smaller than the sum of its proper divisors (2009917110).

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

1222013130 is a wasteful number, since it uses less digits than its factorization.

1222013130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72935.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1222013130 is about 34957.3043869232. The cubic root of 1222013130 is about 1069.1171364777.

Adding to 1222013130 its reverse (313102221), we get a palindrome (1535115351).

The spelling of 1222013130 in words is "one billion, two hundred twenty-two million, thirteen thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 43 65 78 86 129 130 195 215 258 390 430 559 645 1118 1290 1677 2795 3354 5590 8385 16770 72869 145738 218607 364345 437214 728690 947297 1093035 1894594 2186070 2841891 3133367 4736485 5683782 6266734 9400101 9472970 14209455 15666835 18800202 28418910 31333670 40733771 47000505 81467542 94001010 122201313 203668855 244402626 407337710 611006565 1222013130