202120102000 has 80 divisors (see below), whose sum is σ = 495610225344. Its totient is φ = 79709280000.

The previous prime is 202120101991. The next prime is 202120102001. The reversal of 202120102000 is 201021202.

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 not an unprimeable number, because it can be changed into a prime (202120102001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569691 + ... + 853690.

Almost surely, 2^202120102000 is an apocalyptic number.

202120102000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120102000 is an abundant number, since it is smaller than the sum of its proper divisors (293490123344).

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

202120102000 is a wasteful number, since it uses less digits than its factorization.

202120102000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423475 (or 1423459 counting only the distinct ones).

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

Adding to 202120102000 its reverse (201021202), we get a palindrome (202321123202).

The spelling of 202120102000 in words is "two hundred two billion, one hundred twenty million, one hundred two thousand".