1322220402 has 64 divisors (see below), whose sum is σ = 2973231360. Its totient is φ = 435532032.

The previous prime is 1322220397. The next prime is 1322220413. The reversal of 1322220402 is 2040222231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2229418 + ... + 2230010.

It is an arithmetic number, because the mean of its divisors is an integer number (46456740).

Almost surely, 2^1322220402 is an apocalyptic number.

1322220402 is an abundant number, since it is smaller than the sum of its proper divisors (1651010958).

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

1322220402 is a wasteful number, since it uses less digits than its factorization.

1322220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1322220402 is about 36362.3486865191. The cubic root of 1322220402 is about 1097.5760404486.

Adding to 1322220402 its reverse (2040222231), we get a palindrome (3362442633).

The spelling of 1322220402 in words is "one billion, three hundred twenty-two million, two hundred twenty thousand, four hundred two".