1222629656 has 16 divisors (see below), whose sum is σ = 2324719440. Its totient is φ = 602704480.

The previous prime is 1222629631. The next prime is 1222629671. The reversal of 1222629656 is 6569262221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075691 + ... + 1076826.

It is an arithmetic number, because the mean of its divisors is an integer number (145294965).

Almost surely, 2^1222629656 is an apocalyptic number.

It is an amenable number.

1222629656 is a deficient number, since it is larger than the sum of its proper divisors (1102089784).

1222629656 is a wasteful number, since it uses less digits than its factorization.

1222629656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152594 (or 2152590 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 1222629656 is about 34966.1215464341. The cubic root of 1222629656 is about 1069.2969020568.

The spelling of 1222629656 in words is "one billion, two hundred twenty-two million, six hundred twenty-nine thousand, six hundred fifty-six".