20400422204022 has 32 divisors (see below), whose sum is σ = 46833158918400. Its totient is φ = 5803239251808.

The previous prime is 20400422204021. The next prime is 20400422204069. The reversal of 20400422204022 is 22040222400402.

It is a super-2 number, since 2×20400422204022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20400422203983 and 20400422204001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400422204021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1060523872 + ... + 1060543107.

It is an arithmetic number, because the mean of its divisors is an integer number (1463536216200).

Almost surely, 2^{20400422204022} is an apocalyptic number.

20400422204022 is an abundant number, since it is smaller than the sum of its proper divisors (26432736714378).

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

20400422204022 is a wasteful number, since it uses less digits than its factorization.

20400422204022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121067220.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20400422204022 its reverse (22040222400402), we get a palindrome (42440644604424).

The spelling of 20400422204022 in words is "twenty trillion, four hundred billion, four hundred twenty-two million, two hundred four thousand, twenty-two".