1216616662122 has 32 divisors (see below), whose sum is σ = 2539251372672. Its totient is φ = 387872341824.

The previous prime is 1216616662117. The next prime is 1216616662171. The reversal of 1216616662122 is 2212666166121.

It is a super-2 number, since 2×1216616662122² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1192888 + ... + 1963724.

It is an arithmetic number, because the mean of its divisors is an integer number (79351605396).

Almost surely, 2^{1216616662122} is an apocalyptic number.

1216616662122 is an abundant number, since it is smaller than the sum of its proper divisors (1322634710550).

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

1216616662122 is a wasteful number, since it uses less digits than its factorization.

1216616662122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782302.

The product of its digits is 124416, while the sum is 42.

The spelling of 1216616662122 in words is "one trillion, two hundred sixteen billion, six hundred sixteen million, six hundred sixty-two thousand, one hundred twenty-two".