22271229778 has 16 divisors (see below), whose sum is σ = 38479878144. Its totient is φ = 9469656000.

The previous prime is 22271229769. The next prime is 22271229817. The reversal of 22271229778 is 87792217222.

It is a happy 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, 6261223 + ... + 6264778.

It is an arithmetic number, because the mean of its divisors is an integer number (2404992384).

Almost surely, 2^22271229778 is an apocalyptic number.

22271229778 is a deficient number, since it is larger than the sum of its proper divisors (16208648366).

22271229778 is a wasteful number, since it uses less digits than its factorization.

22271229778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12526137.

The product of its digits is 790272, while the sum is 49.

The spelling of 22271229778 in words is "twenty-two billion, two hundred seventy-one million, two hundred twenty-nine thousand, seven hundred seventy-eight".