1222555604 has 6 divisors (see below), whose sum is σ = 2139472314. Its totient is φ = 611277800.

The previous prime is 1222555597. The next prime is 1222555613. The reversal of 1222555604 is 4065552221.

It can be written as a sum of positive squares in only one way, i.e., 1207423504 + 15132100 = 34748^2 + 3890^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152819447 + ... + 152819454.

It is an arithmetic number, because the mean of its divisors is an integer number (356578719).

Almost surely, 2^1222555604 is an apocalyptic number.

It is an amenable number.

1222555604 is a deficient number, since it is larger than the sum of its proper divisors (916916710).

1222555604 is a wasteful number, since it uses less digits than its factorization.

1222555604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305638905 (or 305638903 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 1222555604 is about 34965.0626197065. The cubic root of 1222555604 is about 1069.2753132973.

The spelling of 1222555604 in words is "one billion, two hundred twenty-two million, five hundred fifty-five thousand, six hundred four".