1231032220012 has 48 divisors (see below), whose sum is σ = 2499030116352. Its totient is φ = 519677645760.

The previous prime is 1231032219961. The next prime is 1231032220027. The reversal of 1231032220012 is 2100222301321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889613 + ... + 2456155.

It is an arithmetic number, because the mean of its divisors is an integer number (52063127424).

Almost surely, 2^{1231032220012} is an apocalyptic number.

It is an amenable number.

1231032220012 is an abundant number, since it is smaller than the sum of its proper divisors (1267997896340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231032220012 is a wasteful number, since it uses less digits than its factorization.

1231032220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567718 (or 567716 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1231032220012 its reverse (2100222301321), we get a palindrome (3331254521333).

The spelling of 1231032220012 in words is "one trillion, two hundred thirty-one billion, thirty-two million, two hundred twenty thousand, twelve".