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2221122103031 = 131389171229911
BaseRepresentation
bin100000010100100101001…
…100011010011011110111
321212100002211002112200202
4200110211030122123313
5242342324224244111
64420211443031115
7316320322240256
oct40244514323367
97770084075622
102221122103031
11786a77582687
122ba57536b49b
131315b287a560
1479707caa79d
153cb9a96cb3b
hex2052531a6f7

2221122103031 has 8 divisors (see below), whose sum is σ = 2391996813024. Its totient is φ = 2050250130720.

The previous prime is 2221122103021. The next prime is 2221122103043. The reversal of 2221122103031 is 1303012211222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2221122103031 is a prime.

It is a super-3 number, since 3×22211221030313 (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2221122102994 and 2221122103012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221122103021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190966 + ... + 2420876.

It is an arithmetic number, because the mean of its divisors is an integer number (298999601628).

Almost surely, 22221122103031 is an apocalyptic number.

2221122103031 is a deficient number, since it is larger than the sum of its proper divisors (170874709993).

2221122103031 is a wasteful number, since it uses less digits than its factorization.

2221122103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368841.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2221122103031 its reverse (1303012211222), we get a palindrome (3524134314253).

The spelling of 2221122103031 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred three thousand, thirty-one".

Divisors: 1 13 138917 1229911 1805921 15988843 170855546387 2221122103031