22121313031 has 16 divisors (see below), whose sum is σ = 22894768800. Its totient is φ = 21364282368.

The previous prime is 22121313007. The next prime is 22121313041. The reversal of 22121313031 is 13031312122.

It is a cyclic number.

It is not a de Polignac number, because 22121313031 - 2¹³ = 22121304839 is a prime.

It is a super-2 number, since 2×22121313031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121313041) 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, 810991 + ... + 837823.

It is an arithmetic number, because the mean of its divisors is an integer number (1430923050).

Almost surely, 2^22121313031 is an apocalyptic number.

22121313031 is a deficient number, since it is larger than the sum of its proper divisors (773455769).

22121313031 is a wasteful number, since it uses less digits than its factorization.

22121313031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27138.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 22121313031 its reverse (13031312122), we get a palindrome (35152625153).

Subtracting from 22121313031 its reverse (13031312122), we obtain a palindrome (9090000909).

The spelling of 22121313031 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirteen thousand, thirty-one".