210221201202100 has 72 divisors (see below), whose sum is σ = 497666924028288. Its totient is φ = 76441614220800.

The previous prime is 210221201202073. The next prime is 210221201202137. The reversal of 210221201202100 is 1202102122012.

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 23 ways as a sum of consecutive naturals, for example, 31313644 + ... + 37429756.

It is an arithmetic number, because the mean of its divisors is an integer number (6912040611504).

Almost surely, 2^{210221201202100} is an apocalyptic number.

210221201202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210221201202100 is an abundant number, since it is smaller than the sum of its proper divisors (287445722826188).

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

210221201202100 is a wasteful number, since it uses less digits than its factorization.

210221201202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6147385 (or 6147378 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210221201202100 its reverse (1202102122012), we get a palindrome (211423303324112).

The spelling of 210221201202100 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred one million, two hundred two thousand, one hundred".