1213021032312 has 96 divisors (see below), whose sum is σ = 3094786823040. Its totient is φ = 396193291200.

The previous prime is 1213021032259. The next prime is 1213021032329. The reversal of 1213021032312 is 2132301203121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19689637 + ... + 19751147.

It is an arithmetic number, because the mean of its divisors is an integer number (32237362740).

Almost surely, 2^{1213021032312} is an apocalyptic number.

1213021032312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213021032312 is an abundant number, since it is smaller than the sum of its proper divisors (1881765790728).

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

1213021032312 is a wasteful number, since it uses less digits than its factorization.

1213021032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61825 (or 61750 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1213021032312 its reverse (2132301203121), we get a palindrome (3345322235433).

The spelling of 1213021032312 in words is "one trillion, two hundred thirteen billion, twenty-one million, thirty-two thousand, three hundred twelve".