122216391899 has 16 divisors (see below), whose sum is σ = 143961487296. Its totient is φ = 101562854400.

The previous prime is 122216391883. The next prime is 122216391911. The reversal of 122216391899 is 998193612221.

It is a happy number.

It is not a de Polignac number, because 122216391899 - 2⁴ = 122216391883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122216391899.

It is not an unprimeable number, because it can be changed into a prime (122216391839) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 766862 + ... + 912419.

It is an arithmetic number, because the mean of its divisors is an integer number (8997592956).

Almost surely, 2^122216391899 is an apocalyptic number.

122216391899 is a deficient number, since it is larger than the sum of its proper divisors (21745095397).

122216391899 is a wasteful number, since it uses less digits than its factorization.

122216391899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679606.

The product of its digits is 839808, while the sum is 53.

The spelling of 122216391899 in words is "one hundred twenty-two billion, two hundred sixteen million, three hundred ninety-one thousand, eight hundred ninety-nine".