1213530051012 has 48 divisors (see below), whose sum is σ = 2930164406400. Its totient is φ = 390434204160.

The previous prime is 1213530051011. The next prime is 1213530051023. The reversal of 1213530051012 is 2101500353121.

It is a super-3 number, since 3×1213530051012³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213530051011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505212 + ... + 1637772.

It is an arithmetic number, because the mean of its divisors is an integer number (61045091800).

Almost surely, 2^{1213530051012} is an apocalyptic number.

1213530051012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213530051012 is an abundant number, since it is smaller than the sum of its proper divisors (1716634355388).

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

1213530051012 is a wasteful number, since it uses less digits than its factorization.

1213530051012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135676 (or 1135674 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 1213530051012 in words is "one trillion, two hundred thirteen billion, five hundred thirty million, fifty-one thousand, twelve".