210021202000 has 80 divisors (see below), whose sum is σ = 519641508672. Its totient is φ = 82054761600.

The previous prime is 210021201983. The next prime is 210021202019. The reversal of 210021202000 is 202120012.

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 (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1135054 + ... + 1307053.

Almost surely, 2^210021202000 is an apocalyptic number.

210021202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021202000 is an abundant number, since it is smaller than the sum of its proper divisors (309620306672).

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

210021202000 is a wasteful number, since it uses less digits than its factorization.

210021202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442173 (or 2442157 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 210021202000 its reverse (202120012), we get a palindrome (210223322012).

The spelling of 210021202000 in words is "two hundred ten billion, twenty-one million, two hundred two thousand".