1222221339 has 16 divisors (see below), whose sum is σ = 1816608640. Its totient is φ = 812154600.

The previous prime is 1222221337. The next prime is 1222221347. The reversal of 1222221339 is 9331222221.

It is not a de Polignac number, because 1222221339 - 2¹ = 1222221337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222221337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65437 + ... + 82014.

It is an arithmetic number, because the mean of its divisors is an integer number (113538040).

Almost surely, 2^1222221339 is an apocalyptic number.

1222221339 is a deficient number, since it is larger than the sum of its proper divisors (594387301).

1222221339 is a wasteful number, since it uses less digits than its factorization.

1222221339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147767 (or 147761 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1222221339 is about 34960.2823072126. The cubic root of 1222221339 is about 1069.1778524562.

The spelling of 1222221339 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred thirty-nine".