2112212021112 has 64 divisors (see below), whose sum is σ = 5868356121600. Its totient is φ = 703938612960.

The previous prime is 2112212021111. The next prime is 2112212021113. The reversal of 2112212021112 is 2111202122112.

2112212021112 is a `hidden beast` number, since 211 + 221 + 20 + 211 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2112212021111) and next prime (2112212021113).

It is a super-2 number, since 2×2112212021112² (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112212021111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240537 + ... + 2069367.

It is an arithmetic number, because the mean of its divisors is an integer number (91693064400).

Almost surely, 2^{2112212021112} is an apocalyptic number.

It is an amenable number.

2112212021112 is an abundant number, since it is smaller than the sum of its proper divisors (3756144100488).

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

2112212021112 is a wasteful number, since it uses less digits than its factorization.

2112212021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834193 (or 1834183 counting only the distinct ones).

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

Adding to 2112212021112 its reverse (2111202122112), we get a palindrome (4223414143224).

The spelling of 2112212021112 in words is "two trillion, one hundred twelve billion, two hundred twelve million, twenty-one thousand, one hundred twelve".