2122012121112 has 96 divisors (see below), whose sum is σ = 6230740698000. Its totient is φ = 648544704768.

The previous prime is 2122012121111. The next prime is 2122012121197. The reversal of 2122012121112 is 2111212102212.

It is a super-2 number, since 2×2122012121112² (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 (2122012121111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7468278 + ... + 7747205.

Almost surely, 2^{2122012121112} is an apocalyptic number.

It is an amenable number.

2122012121112 is an abundant number, since it is smaller than the sum of its proper divisors (4108728576888).

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

2122012121112 is a wasteful number, since it uses less digits than its factorization.

2122012121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15215657 (or 15215650 counting only the distinct ones).

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

Adding to 2122012121112 its reverse (2111212102212), we get a palindrome (4233224223324).

The spelling of 2122012121112 in words is "two trillion, one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, one hundred twelve".