213001221321012 has 12 divisors (see below), whose sum is σ = 497002849749056. Its totient is φ = 71000407107000.

The previous prime is 213001221320983. The next prime is 213001221321043. The reversal of 213001221321012 is 210123122100312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 213001221321012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8875050888364 + ... + 8875050888387.

Almost surely, 2^{213001221321012} is an apocalyptic number.

It is an amenable number.

213001221321012 is an abundant number, since it is smaller than the sum of its proper divisors (284001628428044).

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

213001221321012 is a wasteful number, since it uses less digits than its factorization.

213001221321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17750101776758 (or 17750101776756 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 213001221321012 its reverse (210123122100312), we get a palindrome (423124343421324).

The spelling of 213001221321012 in words is "two hundred thirteen trillion, one billion, two hundred twenty-one million, three hundred twenty-one thousand, twelve".