202021100021200 has 60 divisors (see below), whose sum is σ = 510900729283360. Its totient is φ = 76555364215680.

The previous prime is 202021100021189. The next prime is 202021100021231. The reversal of 202021100021200 is 2120001120202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13290854244 + ... + 13290869443.

Almost surely, 2^{202021100021200} is an apocalyptic number.

202021100021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202021100021200 is an abundant number, since it is smaller than the sum of its proper divisors (308879629262160).

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

202021100021200 is a wasteful number, since it uses less digits than its factorization.

202021100021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26581723724 (or 26581723713 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202021100021200 its reverse (2120001120202), we get a palindrome (204141101141402).

The spelling of 202021100021200 in words is "two hundred two trillion, twenty-one billion, one hundred million, twenty-one thousand, two hundred".