1226217055 has 32 divisors (see below), whose sum is σ = 1858028544. Its totient is φ = 756957696.

The previous prime is 1226217023. The next prime is 1226217103. The reversal of 1226217055 is 5507126221.

It is a cyclic number.

It is not a de Polignac number, because 1226217055 - 2⁵ = 1226217023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31117 + ... + 58486.

It is an arithmetic number, because the mean of its divisors is an integer number (58063392).

Almost surely, 2^1226217055 is an apocalyptic number.

1226217055 is a deficient number, since it is larger than the sum of its proper divisors (631811489).

1226217055 is a wasteful number, since it uses less digits than its factorization.

1226217055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89655.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1226217055 is about 35017.3821837098. The cubic root of 1226217055 is about 1070.3417125619.

The spelling of 1226217055 in words is "one billion, two hundred twenty-six million, two hundred seventeen thousand, fifty-five".