20400202222 has 32 divisors (see below), whose sum is σ = 32229451584. Its totient is φ = 9665779200.

The previous prime is 20400202217. The next prime is 20400202231. The reversal of 20400202222 is 22220200402.

It is a junction number, because it is equal to n+sod(n) for n = 20400202196 and 20400202205.

It is a congruent number.

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, 2179272 + ... + 2188612.

It is an arithmetic number, because the mean of its divisors is an integer number (1007170362).

Almost surely, 2^20400202222 is an apocalyptic number.

20400202222 is a deficient number, since it is larger than the sum of its proper divisors (11829249362).

20400202222 is a wasteful number, since it uses less digits than its factorization.

20400202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9804.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20400202222 its reverse (22220200402), we get a palindrome (42620402624).

The spelling of 20400202222 in words is "twenty billion, four hundred million, two hundred two thousand, two hundred twenty-two".