1222618012 has 120 divisors (see below), whose sum is σ = 2778233472. Its totient is φ = 466754400.

The previous prime is 1222617997. The next prime is 1222618027. The reversal of 1222618012 is 2108162221.

It is an interprime number because it is at equal distance from previous prime (1222617997) and next prime (1222618027).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7500643 + ... + 7500805.

Almost surely, 2^1222618012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222618012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1389116736).

1222618012 is an abundant number, since it is smaller than the sum of its proper divisors (1555615460).

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

1222618012 is a wasteful number, since it uses less digits than its factorization.

1222618012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1222618012 is about 34965.9550420119. The cubic root of 1222618012 is about 1069.2935074795.

The spelling of 1222618012 in words is "one billion, two hundred twenty-two million, six hundred eighteen thousand, twelve".