202110021200 has 60 divisors (see below), whose sum is σ = 486216612288. Its totient is φ = 80736240000.

The previous prime is 202110021149. The next prime is 202110021301. The reversal of 202110021200 is 2120011202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36002 + ... + 636801.

Almost surely, 2^202110021200 is an apocalyptic number.

202110021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202110021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243108306144).

202110021200 is an abundant number, since it is smaller than the sum of its proper divisors (284106591088).

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

202110021200 is a wasteful number, since it uses less digits than its factorization.

202110021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673572 (or 673561 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202110021200 its reverse (2120011202), we get a palindrome (204230032402).

The spelling of 202110021200 in words is "two hundred two billion, one hundred ten million, twenty-one thousand, two hundred".