1222521392 has 20 divisors (see below), whose sum is σ = 2471620080. Its totient is φ = 584683968.

The previous prime is 1222521367. The next prime is 1222521401. The reversal of 1222521392 is 2931252221.

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 3 ways as a sum of consecutive naturals, for example, 1660667 + ... + 1661402.

It is an arithmetic number, because the mean of its divisors is an integer number (123581004).

Almost surely, 2^1222521392 is an apocalyptic number.

It is an amenable number.

1222521392 is an abundant number, since it is smaller than the sum of its proper divisors (1249098688).

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

1222521392 is a wasteful number, since it uses less digits than its factorization.

1222521392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322100 (or 3322094 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 1222521392 is about 34964.5733850708. The cubic root of 1222521392 is about 1069.2653390030.

The spelling of 1222521392 in words is "one billion, two hundred twenty-two million, five hundred twenty-one thousand, three hundred ninety-two".