22122312031 has 4 divisors (see below), whose sum is σ = 22142664832. Its totient is φ = 22101959232.

The previous prime is 22122312029. The next prime is 22122312053. The reversal of 22122312031 is 13021322122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13021322122 = 2 ⋅6510661061.

It is a cyclic number.

It is not a de Polignac number, because 22122312031 - 2¹ = 22122312029 is a prime.

It is a super-2 number, since 2×22122312031² (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 (22122312631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10174770 + ... + 10176943.

It is an arithmetic number, because the mean of its divisors is an integer number (5535666208).

Almost surely, 2^22122312031 is an apocalyptic number.

22122312031 is a deficient number, since it is larger than the sum of its proper divisors (20352801).

22122312031 is a wasteful number, since it uses less digits than its factorization.

22122312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20352800.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22122312031 its reverse (13021322122), we get a palindrome (35143634153).

It can be divided in two parts, 22122 and 312031, that added together give a triangular number (334153 = T₈₁₇).

The spelling of 22122312031 in words is "twenty-two billion, one hundred twenty-two million, three hundred twelve thousand, thirty-one".