1222981392 has 40 divisors (see below), whose sum is σ = 3296735424. Its totient is φ = 389935744.

The previous prime is 1222981381. The next prime is 1222981393. The reversal of 1222981392 is 2931892221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222981392.

It is not an unprimeable number, because it can be changed into a prime (1222981393) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 552783 + ... + 554990.

Almost surely, 2^1222981392 is an apocalyptic number.

1222981392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222981392 is an abundant number, since it is smaller than the sum of its proper divisors (2073754032).

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

1222981392 is a wasteful number, since it uses less digits than its factorization.

1222981392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107807 (or 1107801 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 1222981392 is about 34971.1508532390. The cubic root of 1222981392 is about 1069.3994335557.

The spelling of 1222981392 in words is "one billion, two hundred twenty-two million, nine hundred eighty-one thousand, three hundred ninety-two".