1216122756716 has 24 divisors (see below), whose sum is σ = 2575318779936. Its totient is φ = 490536910080.

The previous prime is 1216122756683. The next prime is 1216122756727. The reversal of 1216122756716 is 6176572216121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277439395 + ... + 1277440346.

It is an arithmetic number, because the mean of its divisors is an integer number (107304949164).

Almost surely, 2^{1216122756716} is an apocalyptic number.

It is an amenable number.

1216122756716 is an abundant number, since it is smaller than the sum of its proper divisors (1359196023220).

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

1216122756716 is a wasteful number, since it uses less digits than its factorization.

1216122756716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554879769 (or 2554879767 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The spelling of 1216122756716 in words is "one trillion, two hundred sixteen billion, one hundred twenty-two million, seven hundred fifty-six thousand, seven hundred sixteen".