231110121022 has 32 divisors (see below), whose sum is σ = 391562035200. Its totient is φ = 101339196000.

The previous prime is 231110120909. The next prime is 231110121029. The reversal of 231110121022 is 220121011132.

It is a junction number, because it is equal to n+sod(n) for n = 231110120987 and 231110121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231110121029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576979 + ... + 891697.

It is an arithmetic number, because the mean of its divisors is an integer number (12236313600).

Almost surely, 2^231110121022 is an apocalyptic number.

231110121022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231110121022 is a deficient number, since it is larger than the sum of its proper divisors (160451914178).

231110121022 is a wasteful number, since it uses less digits than its factorization.

231110121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315912.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 231110121022 its reverse (220121011132), we get a palindrome (451231132154).

The spelling of 231110121022 in words is "two hundred thirty-one billion, one hundred ten million, one hundred twenty-one thousand, twenty-two".