22121110031 has 16 divisors (see below), whose sum is σ = 23447276160. Its totient is φ = 20811647520.

The previous prime is 22121110027. The next prime is 22121110051. The reversal of 22121110031 is 13001112122.

It is a cyclic number.

It is not a de Polignac number, because 22121110031 - 2² = 22121110027 is a prime.

It is a super-2 number, since 2×22121110031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22121109988 and 22121110015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121110051) 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, 1608896 + ... + 1622586.

It is an arithmetic number, because the mean of its divisors is an integer number (1465454760).

Almost surely, 2^22121110031 is an apocalyptic number.

22121110031 is a deficient number, since it is larger than the sum of its proper divisors (1326166129).

22121110031 is a wasteful number, since it uses less digits than its factorization.

22121110031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14294.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 22121110031 its reverse (13001112122), we get a palindrome (35122222153).

The spelling of 22121110031 in words is "twenty-two billion, one hundred twenty-one million, one hundred ten thousand, thirty-one".