1222057906 has 8 divisors (see below), whose sum is σ = 1833252480. Its totient is φ = 610973748.

The previous prime is 1222057897. The next prime is 1222057927. The reversal of 1222057906 is 6097502221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10695 + ... + 50581.

It is an arithmetic number, because the mean of its divisors is an integer number (229156560).

Almost surely, 2^1222057906 is an apocalyptic number.

1222057906 is a deficient number, since it is larger than the sum of its proper divisors (611194574).

1222057906 is a wasteful number, since it uses less digits than its factorization.

1222057906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55208.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1222057906 is about 34957.9448194541. The cubic root of 1222057906 is about 1069.1301942218.

The spelling of 1222057906 in words is "one billion, two hundred twenty-two million, fifty-seven thousand, nine hundred six".