2112222021012 has 72 divisors (see below), whose sum is σ = 5603573049984. Its totient is φ = 669569203776.

The previous prime is 2112222021001. The next prime is 2112222021047. The reversal of 2112222021012 is 2101202222112.

It is a happy number.

2112222021012 is a `hidden beast` number, since 211 + 22 + 220 + 210 + 1 + 2 = 666.

It is a super-2 number, since 2×2112222021012² (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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7229568 + ... + 7516055.

It is an arithmetic number, because the mean of its divisors is an integer number (77827403472).

Almost surely, 2^{2112222021012} is an apocalyptic number.

It is an amenable number.

2112222021012 is an abundant number, since it is smaller than the sum of its proper divisors (3491351028972).

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

2112222021012 is a wasteful number, since it uses less digits than its factorization.

2112222021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14745829 (or 14745824 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2112222021012 its reverse (2101202222112), we get a palindrome (4213424243124).

The spelling of 2112222021012 in words is "two trillion, one hundred twelve billion, two hundred twenty-two million, twenty-one thousand, twelve".