22031233121 has 16 divisors (see below), whose sum is σ = 22889361408. Its totient is φ = 21187656000.

The previous prime is 22031233111. The next prime is 22031233157. The reversal of 22031233121 is 12133213022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22031233121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22031233093 and 22031233102.

It is not an unprimeable number, because it can be changed into a prime (22031233111) 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, 2353376 + ... + 2362718.

It is an arithmetic number, because the mean of its divisors is an integer number (1430585088).

Almost surely, 2^22031233121 is an apocalyptic number.

It is an amenable number.

22031233121 is a deficient number, since it is larger than the sum of its proper divisors (858128287).

22031233121 is a wasteful number, since it uses less digits than its factorization.

22031233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22031233121 its reverse (12133213022), we get a palindrome (34164446143).

The spelling of 22031233121 in words is "twenty-two billion, thirty-one million, two hundred thirty-three thousand, one hundred twenty-one".