20021020122 has 32 divisors (see below), whose sum is σ = 42817253184. Its totient is φ = 6218912000.

The previous prime is 20021020111. The next prime is 20021020147. The reversal of 20021020122 is 22102012002.

It is a junction number, because it is equal to n+sod(n) for n = 20021020098 and 20021020107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961404 + ... + 982007.

It is an arithmetic number, because the mean of its divisors is an integer number (1338039162).

Almost surely, 2^20021020122 is an apocalyptic number.

20021020122 is an abundant number, since it is smaller than the sum of its proper divisors (22796233062).

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

20021020122 is a wasteful number, since it uses less digits than its factorization.

20021020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943534.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20021020122 its reverse (22102012002), we get a palindrome (42123032124).

The spelling of 20021020122 in words is "twenty billion, twenty-one million, twenty thousand, one hundred twenty-two".