1322220172 has 36 divisors (see below), whose sum is σ = 2863516656. Its totient is φ = 523074240.

The previous prime is 1322220161. The next prime is 1322220173. The reversal of 1322220172 is 2710222231.

It is not an unprimeable number, because it can be changed into a prime (1322220173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134979 + ... + 144442.

Almost surely, 2^1322220172 is an apocalyptic number.

It is an amenable number.

1322220172 is an abundant number, since it is smaller than the sum of its proper divisors (1541296484).

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

1322220172 is a wasteful number, since it uses less digits than its factorization.

1322220172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279458 (or 279443 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1322220172 is about 36362.3455239070. The cubic root of 1322220172 is about 1097.5759768076.

The spelling of 1322220172 in words is "one billion, three hundred twenty-two million, two hundred twenty thousand, one hundred seventy-two".