211210112101220 has 96 divisors (see below), whose sum is σ = 471729119016960. Its totient is φ = 79314829102080.

The previous prime is 211210112101111. The next prime is 211210112101223. The reversal of 211210112101220 is 22101211012112.

It is a super-2 number, since 2×211210112101220² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211210112101223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33185432 + ... + 39034511.

It is an arithmetic number, because the mean of its divisors is an integer number (4913844989760).

Almost surely, 2^{211210112101220} is an apocalyptic number.

211210112101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210112101220 is an abundant number, since it is smaller than the sum of its proper divisors (260519006915740).

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

211210112101220 is a wasteful number, since it uses less digits than its factorization.

211210112101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72220125 (or 72220123 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211210112101220 its reverse (22101211012112), we get a palindrome (233311323113332).

The spelling of 211210112101220 in words is "two hundred eleven trillion, two hundred ten billion, one hundred twelve million, one hundred one thousand, two hundred twenty".