20402420222 has 32 divisors (see below), whose sum is σ = 32536082592. Its totient is φ = 9562051584.

The previous prime is 20402420219. The next prime is 20402420237. The reversal of 20402420222 is 22202420402.

It is a junction number, because it is equal to n+sod(n) for n = 20402420194 and 20402420203.

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, 11637698 + ... + 11639450.

It is an arithmetic number, because the mean of its divisors is an integer number (1016752581).

Almost surely, 2^20402420222 is an apocalyptic number.

20402420222 is a deficient number, since it is larger than the sum of its proper divisors (12133662370).

20402420222 is a wasteful number, since it uses less digits than its factorization.

20402420222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972.

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

Adding to 20402420222 its reverse (22202420402), we get a palindrome (42604840624).

The spelling of 20402420222 in words is "twenty billion, four hundred two million, four hundred twenty thousand, two hundred twenty-two".