20122021012 has 12 divisors (see below), whose sum is σ = 36349457536. Its totient is φ = 9736461720.

The previous prime is 20122021009. The next prime is 20122021039. The reversal of 20122021012 is 21012022102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20122020983 and 20122021001.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 81137058 + ... + 81137305.

Almost surely, 2^20122021012 is an apocalyptic number.

It is an amenable number.

20122021012 is a deficient number, since it is larger than the sum of its proper divisors (16227436524).

20122021012 is a wasteful number, since it uses less digits than its factorization.

20122021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162274398 (or 162274396 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20122021012 its reverse (21012022102), we get a palindrome (41134043114).

The spelling of 20122021012 in words is "twenty billion, one hundred twenty-two million, twenty-one thousand, twelve".