210102200220 has 72 divisors (see below), whose sum is σ = 646628612112. Its totient is φ = 50933864960.

The previous prime is 210102200207. The next prime is 210102200251. The reversal of 210102200220 is 22002201012.

210102200220 = T₂₈₈₈₈ + T₂₈₈₈₉ + ... + T₂₉₃₈₂.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 210102200196 and 210102200205.

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, 14462589 + ... + 14477108.

It is an arithmetic number, because the mean of its divisors is an integer number (8980952946).

Almost surely, 2^210102200220 is an apocalyptic number.

210102200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210102200220 is an abundant number, since it is smaller than the sum of its proper divisors (436526411892).

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

210102200220 is a wasteful number, since it uses less digits than its factorization.

210102200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28939731 (or 28939718 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 210102200220 its reverse (22002201012), we get a palindrome (232104401232).

The spelling of 210102200220 in words is "two hundred ten billion, one hundred two million, two hundred thousand, two hundred twenty".