213031021002000 has 80 divisors (see below), whose sum is σ = 686812011729792. Its totient is φ = 56808272265600.

The previous prime is 213031021001969. The next prime is 213031021002067. The reversal of 213031021002000 is 200120130312.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17752579084 + ... + 17752591083.

Almost surely, 2^{213031021002000} is an apocalyptic number.

213031021002000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213031021002000 is an abundant number, since it is smaller than the sum of its proper divisors (473780990727792).

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

213031021002000 is a wasteful number, since it uses less digits than its factorization.

213031021002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35505170193 (or 35505170177 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 213031021002000 its reverse (200120130312), we get a palindrome (213231141132312).

The spelling of 213031021002000 in words is "two hundred thirteen trillion, thirty-one billion, twenty-one million, two thousand".