22121313231031 has 16 divisors (see below), whose sum is σ = 25586364787200. Its totient is φ = 18732482441568.

The previous prime is 22121313231029. The next prime is 22121313231089. The reversal of 22121313231031 is 13013231312122.

It is not a de Polignac number, because 22121313231031 - 2¹ = 22121313231029 is a prime.

It is a super-2 number, since 2×22121313231031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22121313230987 and 22121313231005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121313231131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92625190 + ... + 92863708.

It is an arithmetic number, because the mean of its divisors is an integer number (1599147799200).

Almost surely, 2^{22121313231031} is an apocalyptic number.

22121313231031 is a deficient number, since it is larger than the sum of its proper divisors (3465051556169).

22121313231031 is a wasteful number, since it uses less digits than its factorization.

22121313231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398238.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 22121313231031 its reverse (13013231312122), we get a palindrome (35134544543153).

The spelling of 22121313231031 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred thirteen million, two hundred thirty-one thousand, thirty-one".