210010102020 has 72 divisors (see below), whose sum is σ = 657580035840. Its totient is φ = 54196153920.

The previous prime is 210010101971. The next prime is 210010102033. The reversal of 210010102020 is 20201010012.

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

It is a junction number, because it is equal to n+sod(n) for n = 210010101993 and 210010102011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18812530 + ... + 18823689.

Almost surely, 2^210010102020 is an apocalyptic number.

210010102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210010102020 is an abundant number, since it is smaller than the sum of its proper divisors (447569933820).

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

210010102020 is a wasteful number, since it uses less digits than its factorization.

210010102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37636265 (or 37636260 counting only the distinct ones).

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

Adding to 210010102020 its reverse (20201010012), we get a palindrome (230211112032).

The spelling of 210010102020 in words is "two hundred ten billion, ten million, one hundred two thousand, twenty".