210102020100 has 180 divisors, whose sum is σ = 778363348224. Its totient is φ = 48023305920.

The previous prime is 210102020099. The next prime is 210102020129. The reversal of 210102020100 is 1020201012.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1796052 + ... + 1909451.

Almost surely, 2^210102020100 is an apocalyptic number.

210102020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210102020100 is an abundant number, since it is smaller than the sum of its proper divisors (568261328124).

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

210102020100 is a wasteful number, since it uses less digits than its factorization.

210102020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705536 (or 3705520 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 210102020100 its reverse (1020201012), we get a palindrome (211122221112).

The spelling of 210102020100 in words is "two hundred ten billion, one hundred two million, twenty thousand, one hundred".