21422204112 has 20 divisors (see below), whose sum is σ = 55340694080. Its totient is φ = 7140734688.

The previous prime is 21422204107. The next prime is 21422204159. The reversal of 21422204112 is 21140222412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223147912 + ... + 223148007.

It is an arithmetic number, because the mean of its divisors is an integer number (2767034704).

Almost surely, 2^21422204112 is an apocalyptic number.

It is an amenable number.

21422204112 is an abundant number, since it is smaller than the sum of its proper divisors (33918489968).

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

21422204112 is a wasteful number, since it uses less digits than its factorization.

21422204112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446295930 (or 446295924 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21422204112 its reverse (21140222412), we get a palindrome (42562426524).

The spelling of 21422204112 in words is "twenty-one billion, four hundred twenty-two million, two hundred four thousand, one hundred twelve".