1231220302132 has 24 divisors (see below), whose sum is σ = 2248665048000. Its totient is φ = 588752900736.

The previous prime is 1231220302111. The next prime is 1231220302189. The reversal of 1231220302132 is 2312030221321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444282 + ... + 1630897.

It is an arithmetic number, because the mean of its divisors is an integer number (93694377000).

Almost surely, 2^{1231220302132} is an apocalyptic number.

It is an amenable number.

1231220302132 is a deficient number, since it is larger than the sum of its proper divisors (1017444745868).

1231220302132 is a wasteful number, since it uses less digits than its factorization.

1231220302132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081655 (or 2081653 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1231220302132 its reverse (2312030221321), we get a palindrome (3543250523453).

The spelling of 1231220302132 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, three hundred two thousand, one hundred thirty-two".