1228851117 has 12 divisors (see below), whose sum is σ = 1911546364. Its totient is φ = 756216000.

The previous prime is 1228851109. The next prime is 1228851149. The reversal of 1228851117 is 7111588221.

1228851117 is a `hidden beast` number, since 122 + 8 + 8 + 511 + 17 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 610781796 + 618069321 = 24714^2 + 24861^2 .

It is not a de Polignac number, because 1228851117 - 2³ = 1228851109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228851167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5251384 + ... + 5251617.

Almost surely, 2^1228851117 is an apocalyptic number.

It is an amenable number.

1228851117 is a deficient number, since it is larger than the sum of its proper divisors (682695247).

1228851117 is a wasteful number, since it uses less digits than its factorization.

1228851117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10503020 (or 10503017 counting only the distinct ones).

The product of its digits is 8960, while the sum is 36.

The square root of 1228851117 is about 35054.9727856120. The cubic root of 1228851117 is about 1071.1075720975.

The spelling of 1228851117 in words is "one billion, two hundred twenty-eight million, eight hundred fifty-one thousand, one hundred seventeen".