202120021200 has 120 divisors (see below), whose sum is σ = 651035615776. Its totient is φ = 53600832000.

The previous prime is 202120021183. The next prime is 202120021241. The reversal of 202120021200 is 2120021202.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248086 + ... + 682485.

Almost surely, 2^202120021200 is an apocalyptic number.

202120021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120021200 is an abundant number, since it is smaller than the sum of its proper divisors (448915594576).

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

202120021200 is a wasteful number, since it uses less digits than its factorization.

202120021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930773 (or 930762 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202120021200 its reverse (2120021202), we get a palindrome (204240042402).

The spelling of 202120021200 in words is "two hundred two billion, one hundred twenty million, twenty-one thousand, two hundred".