210021000210012 has 24 divisors (see below), whose sum is σ = 490049246760976. Its totient is φ = 70006964888448.

The previous prime is 210021000210001. The next prime is 210021000210023. The reversal of 210021000210012 is 210012000120012.

It is an interprime number because it is at equal distance from previous prime (210021000210001) and next prime (210021000210023).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 210021000210012.

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, 33627018 + ... + 39380430.

Almost surely, 2^{210021000210012} is an apocalyptic number.

It is an amenable number.

210021000210012 is an abundant number, since it is smaller than the sum of its proper divisors (280028246550964).

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

210021000210012 is a wasteful number, since it uses less digits than its factorization.

210021000210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8795397 (or 8795395 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210021000210012 its reverse (210012000120012), we get a palindrome (420033000330024).

The spelling of 210021000210012 in words is "two hundred ten trillion, twenty-one billion, two hundred ten thousand, twelve".