1213221033012 has 24 divisors (see below), whose sum is σ = 2835055409536. Its totient is φ = 403806106368.

The previous prime is 1213221032999. The next prime is 1213221033029. The reversal of 1213221033012 is 2103301223121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213221033012.

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, 75104668 + ... + 75120819.

Almost surely, 2^{1213221033012} is an apocalyptic number.

1213221033012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213221033012 is an abundant number, since it is smaller than the sum of its proper divisors (1621834376524).

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

1213221033012 is a wasteful number, since it uses less digits than its factorization.

1213221033012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150226167 (or 150226165 counting only the distinct ones).

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

Adding to 1213221033012 its reverse (2103301223121), we get a palindrome (3316522256133).

The spelling of 1213221033012 in words is "one trillion, two hundred thirteen billion, two hundred twenty-one million, thirty-three thousand, twelve".