1222465988 has 48 divisors (see below), whose sum is σ = 2316190464. Its totient is φ = 562398720.

The previous prime is 1222465973. The next prime is 1222466009. The reversal of 1222465988 is 8895642221.

It is a super-2 number, since 2×1222465988² = 2988846183633632288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1552931 + ... + 1553717.

It is an arithmetic number, because the mean of its divisors is an integer number (48253968).

Almost surely, 2^1222465988 is an apocalyptic number.

It is an amenable number.

1222465988 is a deficient number, since it is larger than the sum of its proper divisors (1093724476).

1222465988 is a wasteful number, since it uses less digits than its factorization.

1222465988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292 (or 1290 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 1222465988 is about 34963.7810884349. The cubic root of 1222465988 is about 1069.2491859191.

The spelling of 1222465988 in words is "one billion, two hundred twenty-two million, four hundred sixty-five thousand, nine hundred eighty-eight".