1226217056 has 12 divisors (see below), whose sum is σ = 2414114892. Its totient is φ = 613108512.

The previous prime is 1226217023. The next prime is 1226217103. The reversal of 1226217056 is 6507126221.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 38319283 = 1226217056 / (1 + 2 + 2 + 6 + 2 + 1 + 7 + 0 + 5 + 6).

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, 19159610 + ... + 19159673.

It is an arithmetic number, because the mean of its divisors is an integer number (201176241).

Almost surely, 2^1226217056 is an apocalyptic number.

1226217056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1226217056 is a deficient number, since it is larger than the sum of its proper divisors (1187897836).

1226217056 is an equidigital number, since it uses as much as digits as its factorization.

1226217056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38319293 (or 38319285 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1226217056 is about 35017.3821979885. The cubic root of 1226217056 is about 1070.3417128529.

The spelling of 1226217056 in words is "one billion, two hundred twenty-six million, two hundred seventeen thousand, fifty-six".