210112020 has 36 divisors (see below), whose sum is σ = 637340340. Its totient is φ = 56029824.

The previous prime is 210111971. The next prime is 210112037. The reversal of 210112020 is 20211012.

It can be written as a sum of positive squares in 2 ways, for example, as 150111504 + 60000516 = 12252^2 + 7746^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 210111993 and 210112011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583465 + ... + 583824.

Almost surely, 2^210112020 is an apocalyptic number.

210112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210112020 is an abundant number, since it is smaller than the sum of its proper divisors (427228320).

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

210112020 is a wasteful number, since it uses less digits than its factorization.

210112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167304 (or 1167299 counting only the distinct ones).

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

The square root of 210112020 is about 14495.2412880918. The cubic root of 210112020 is about 594.4978650826.

Adding to 210112020 its reverse (20211012), we get a palindrome (230323032).

The spelling of 210112020 in words is "two hundred ten million, one hundred twelve thousand, twenty".