20021020022 has 16 divisors (see below), whose sum is σ = 30154978080. Its totient is φ = 9969435072.

The previous prime is 20021019989. The next prime is 20021020027. The reversal of 20021020022 is 22002012002.

It is a junction number, because it is equal to n+sod(n) for n = 20021019985 and 20021020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021020027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536978 + ... + 573050.

It is an arithmetic number, because the mean of its divisors is an integer number (1884686130).

Almost surely, 2^20021020022 is an apocalyptic number.

20021020022 is a deficient number, since it is larger than the sum of its proper divisors (10133958058).

20021020022 is a wasteful number, since it uses less digits than its factorization.

20021020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37207.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20021020022 its reverse (22002012002), we get a palindrome (42023032024).

The spelling of 20021020022 in words is "twenty billion, twenty-one million, twenty thousand, twenty-two".