1231220022232 has 16 divisors (see below), whose sum is σ = 2318445431640. Its totient is φ = 612967907136.

The previous prime is 1231220022211. The next prime is 1231220022259. The reversal of 1231220022232 is 2322200221321.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 330261018 + ... + 330264745.

Almost surely, 2^{1231220022232} is an apocalyptic number.

It is an amenable number.

1231220022232 is a deficient number, since it is larger than the sum of its proper divisors (1087225409408).

1231220022232 is a wasteful number, since it uses less digits than its factorization.

1231220022232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660526002 (or 660525998 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1231220022232 its reverse (2322200221321), we get a palindrome (3553420243553).

The spelling of 1231220022232 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, twenty-two thousand, two hundred thirty-two".