2120122111212 has 90 divisors (see below), whose sum is σ = 6447302606052. Its totient is φ = 605749170096.

The previous prime is 2120122111207. The next prime is 2120122111229. The reversal of 2120122111212 is 2121112210212.

2120122111212 is a `hidden beast` number, since 21 + 201 + 221 + 11 + 212 = 666.

It is a super-2 number, since 2×2120122111212² (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 29 ways as a sum of consecutive naturals, for example, 66755418 + ... + 66787169.

Almost surely, 2^{2120122111212} is an apocalyptic number.

It is an amenable number.

2120122111212 is an abundant number, since it is smaller than the sum of its proper divisors (4327180494840).

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

2120122111212 is a wasteful number, since it uses less digits than its factorization.

2120122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133542617 (or 133542599 counting only the distinct ones).

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

Adding to 2120122111212 its reverse (2121112210212), we get a palindrome (4241234321424).

The spelling of 2120122111212 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".