111231120210122 has 24 divisors (see below), whose sum is σ = 183801907390500. Its totient is φ = 50446995146240.

The previous prime is 111231120210103. The next prime is 111231120210139. The reversal of 111231120210122 is 221012021132111.

It can be written as a sum of positive squares in 2 ways, for example, as 110006094047641 + 1225026162481 = 10488379^2 + 1106809^2 .

It is a super-2 number, since 2×111231120210122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111231120210094 and 111231120210103.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 511731797 + ... + 511949112.

Almost surely, 2^{111231120210122} is an apocalyptic number.

111231120210122 is a deficient number, since it is larger than the sum of its proper divisors (72570787180378).

111231120210122 is a wasteful number, since it uses less digits than its factorization.

111231120210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023681382 (or 1023681371 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 111231120210122 its reverse (221012021132111), we get a palindrome (332243141342233).

The spelling of 111231120210122 in words is "one hundred eleven trillion, two hundred thirty-one billion, one hundred twenty million, two hundred ten thousand, one hundred twenty-two".