20400044222 has 16 divisors (see below), whose sum is σ = 32260885200. Its totient is φ = 9648092160.

The previous prime is 20400044177. The next prime is 20400044261. The reversal of 20400044222 is 22244000402.

It is a junction number, because it is equal to n+sod(n) for n = 20400044194 and 20400044203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394397 + ... + 443112.

It is an arithmetic number, because the mean of its divisors is an integer number (2016305325).

Almost surely, 2^20400044222 is an apocalyptic number.

20400044222 is a deficient number, since it is larger than the sum of its proper divisors (11860840978).

20400044222 is a wasteful number, since it uses less digits than its factorization.

20400044222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838171.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20400044222 its reverse (22244000402), we get a palindrome (42644044624).

The spelling of 20400044222 in words is "twenty billion, four hundred million, forty-four thousand, two hundred twenty-two".