23122121221031 has 12 divisors (see below), whose sum is σ = 27624111731208. Its totient is φ = 19283313449232.

The previous prime is 23122121220983. The next prime is 23122121221039. The reversal of 23122121221031 is 13012212122132.

It is a de Polignac number, because none of the positive numbers 2^k-23122121221031 is a prime.

It is a super-2 number, since 2×23122121221031² (a number of 28 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 = 23122121220988 and 23122121221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122121221039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6376755281 + ... + 6376758906.

It is an arithmetic number, because the mean of its divisors is an integer number (2302009310934).

Almost surely, 2^{23122121221031} is an apocalyptic number.

23122121221031 is a deficient number, since it is larger than the sum of its proper divisors (4501990510177).

23122121221031 is a wasteful number, since it uses less digits than its factorization.

23122121221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12753514238 (or 12753514231 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 23122121221031 its reverse (13012212122132), we get a palindrome (36134333343163).

The spelling of 23122121221031 in words is "twenty-three trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, thirty-one".