122290771780 has 12 divisors (see below), whose sum is σ = 256810620780. Its totient is φ = 48916308704.

The previous prime is 122290771663. The next prime is 122290771789. The reversal of 122290771780 is 87177092221.

It can be written as a sum of positive squares in 2 ways, for example, as 50903481924 + 71387289856 = 225618^2 + 267184^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122290771780.

It is not an unprimeable number, because it can be changed into a prime (122290771789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057269275 + ... + 3057269314.

It is an arithmetic number, because the mean of its divisors is an integer number (21400885065).

Almost surely, 2^122290771780 is an apocalyptic number.

122290771780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122290771780 is an abundant number, since it is smaller than the sum of its proper divisors (134519849000).

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

122290771780 is a wasteful number, since it uses less digits than its factorization.

122290771780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114538598 (or 6114538596 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 46.

The spelling of 122290771780 in words is "one hundred twenty-two billion, two hundred ninety million, seven hundred seventy-one thousand, seven hundred eighty".