1226055215 has 64 divisors (see below), whose sum is σ = 1982361600. Its totient is φ = 719147520.

The previous prime is 1226055211. The next prime is 1226055253. The reversal of 1226055215 is 5125506221.

It is not a de Polignac number, because 1226055215 - 2² = 1226055211 is a prime.

It is a super-2 number, since 2×1226055215² = 3006422780457392450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226055211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 318794 + ... + 322616.

It is an arithmetic number, because the mean of its divisors is an integer number (30974400).

Almost surely, 2^1226055215 is an apocalyptic number.

1226055215 is a deficient number, since it is larger than the sum of its proper divisors (756306385).

1226055215 is a wasteful number, since it uses less digits than its factorization.

1226055215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877 (or 3863 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1226055215 is about 35015.0712551039. The cubic root of 1226055215 is about 1070.2946214635.

The spelling of 1226055215 in words is "one billion, two hundred twenty-six million, fifty-five thousand, two hundred fifteen".