1224995216 has 20 divisors (see below), whose sum is σ = 2423928192. Its totient is φ = 599465376.

The previous prime is 1224995183. The next prime is 1224995269. The reversal of 1224995216 is 6125994221.

It is a super-2 number, since 2×1224995216² = 3001226558445773312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813740 + ... + 815243.

Almost surely, 2^1224995216 is an apocalyptic number.

1224995216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1224995216 is a deficient number, since it is larger than the sum of its proper divisors (1198932976).

1224995216 is a wasteful number, since it uses less digits than its factorization.

1224995216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629038 (or 1629032 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 1224995216 is about 34999.9316570761. The cubic root of 1224995216 is about 1069.9860876870.

The spelling of 1224995216 in words is "one billion, two hundred twenty-four million, nine hundred ninety-five thousand, two hundred sixteen".