2112212211210 has 96 divisors (see below), whose sum is σ = 5819347722240. Its totient is φ = 529708875264.

The previous prime is 2112212211139. The next prime is 2112212211233. The reversal of 2112212211210 is 121122122112.

2112212211210 is a `hidden beast` number, since 2 + 11 + 221 + 221 + 1 + 210 = 666.

It is a super-2 number, since 2×2112212211210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1417179 + ... + 2496561.

It is an arithmetic number, because the mean of its divisors is an integer number (60618205440).

Almost surely, 2^{2112212211210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112212211210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2909673861120).

2112212211210 is an abundant number, since it is smaller than the sum of its proper divisors (3707135511030).

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

2112212211210 is a wasteful number, since it uses less digits than its factorization.

2112212211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080692 (or 1080689 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2112212211210 its reverse (121122122112), we get a palindrome (2233334333322).

The spelling of 2112212211210 in words is "two trillion, one hundred twelve billion, two hundred twelve million, two hundred eleven thousand, two hundred ten".