20120122021012 has 12 divisors (see below), whose sum is σ = 37918691501236. Its totient is φ = 9286210163520.

The previous prime is 20120122020989. The next prime is 20120122021063. The reversal of 20120122021012 is 21012022102102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7136826762256 + 12983295258756 = 2671484^2 + 3603234^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193462711689 + ... + 193462711792.

Almost surely, 2^{20120122021012} is an apocalyptic number.

It is an amenable number.

20120122021012 is a deficient number, since it is larger than the sum of its proper divisors (17798569480224).

20120122021012 is a wasteful number, since it uses less digits than its factorization.

20120122021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386925423498 (or 386925423496 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20120122021012 its reverse (21012022102102), we get a palindrome (41132144123114).

The spelling of 20120122021012 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-two million, twenty-one thousand, twelve".