1222705512018 has 56 divisors (see below), whose sum is σ = 2808336642048. Its totient is φ = 398896811352.

The previous prime is 1222705511969. The next prime is 1222705512023. The reversal of 1222705512018 is 8102155072221.

1222705512018 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 70 + 551 + 20 + 18 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 8852946 + ... + 8989997.

It is an arithmetic number, because the mean of its divisors is an integer number (50148868608).

Almost surely, 2^{1222705512018} is an apocalyptic number.

1222705512018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1222705512018 is an abundant number, since it is smaller than the sum of its proper divisors (1585631130030).

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

1222705512018 is an equidigital number, since it uses as much as digits as its factorization.

1222705512018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17843010 (or 17842995 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 1222705512018 in words is "one trillion, two hundred twenty-two billion, seven hundred five million, five hundred twelve thousand, eighteen".