1222856316 has 36 divisors (see below), whose sum is σ = 3372120024. Its totient is φ = 370562400.

The previous prime is 1222856309. The next prime is 1222856339. The reversal of 1222856316 is 6136582221.

1222856316 is a `hidden beast` number, since 12 + 2 + 2 + 8 + 5 + 631 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1543615 + ... + 1544406.

Almost surely, 2^1222856316 is an apocalyptic number.

It is an amenable number.

1222856316 is an abundant number, since it is smaller than the sum of its proper divisors (2149263708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222856316 is a wasteful number, since it uses less digits than its factorization.

1222856316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088042 (or 3088037 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1222856316 is about 34969.3625335092. The cubic root of 1222856316 is about 1069.3629759926.

The spelling of 1222856316 in words is "one billion, two hundred twenty-two million, eight hundred fifty-six thousand, three hundred sixteen".