1213056637212 has 48 divisors (see below), whose sum is σ = 3235052989952. Its totient is φ = 346562400960.

The previous prime is 1213056637201. The next prime is 1213056637223. The reversal of 1213056637212 is 2127366503121.

It is an interprime number because it is at equal distance from previous prime (1213056637201) and next prime (1213056637223).

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 15 ways as a sum of consecutive naturals, for example, 652137 + ... + 1688607.

Almost surely, 2^{1213056637212} is an apocalyptic number.

1213056637212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213056637212 is an abundant number, since it is smaller than the sum of its proper divisors (2021996352740).

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

1213056637212 is a wasteful number, since it uses less digits than its factorization.

1213056637212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050418 (or 1050416 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 1213056637212 in words is "one trillion, two hundred thirteen billion, fifty-six million, six hundred thirty-seven thousand, two hundred twelve".