1322213888 has 30 divisors (see below), whose sum is σ = 2643490311. Its totient is φ = 660695552.

The previous prime is 1322213863. The next prime is 1322213899. The reversal of 1322213888 is 8883122231.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 661106944 + 661106944 = 25712^2 + 25712^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25712.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 821981 + ... + 823587.

Almost surely, 2^1322213888 is an apocalyptic number.

It is an amenable number.

1322213888 is a deficient number, since it is larger than the sum of its proper divisors (1321276423).

1322213888 is an frugal number, since it uses more digits than its factorization.

1322213888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232 (or 1609 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 1322213888 is about 36362.2591157370. The cubic root of 1322213888 is about 1097.5742380204.

The spelling of 1322213888 in words is "one billion, three hundred twenty-two million, two hundred thirteen thousand, eight hundred eighty-eight".