210364821900 has 72 divisors (see below), whose sum is σ = 676283954640. Its totient is φ = 56097285120.

The previous prime is 210364821881. The next prime is 210364821943. The reversal of 210364821900 is 9128463012.

210364821900 is a `hidden beast` number, since 2 + 1 + 0 + 3 + 648 + 2 + 1 + 9 + 0 + 0 = 666.

210364821900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210364821900² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38953749 + ... + 38959148.

Almost surely, 2^210364821900 is an apocalyptic number.

210364821900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210364821900 is an abundant number, since it is smaller than the sum of its proper divisors (465919132740).

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

210364821900 is a wasteful number, since it uses less digits than its factorization.

210364821900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77912920 (or 77912907 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 210364821900 in words is "two hundred ten billion, three hundred sixty-four million, eight hundred twenty-one thousand, nine hundred".