210112100220 has 48 divisors (see below), whose sum is σ = 641796962688. Its totient is φ = 50936266560.

The previous prime is 210112100203. The next prime is 210112100249. The reversal of 210112100220 is 22001211012.

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 = 210112100196 and 210112100205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159175174 + ... + 159176493.

It is an arithmetic number, because the mean of its divisors is an integer number (13370770056).

Almost surely, 2^210112100220 is an apocalyptic number.

210112100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210112100220 is an abundant number, since it is smaller than the sum of its proper divisors (431684862468).

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

210112100220 is a wasteful number, since it uses less digits than its factorization.

210112100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318351690 (or 318351688 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210112100220 its reverse (22001211012), we get a palindrome (232113311232).

The spelling of 210112100220 in words is "two hundred ten billion, one hundred twelve million, one hundred thousand, two hundred twenty".