122861186660 has 12 divisors (see below), whose sum is σ = 258008492028. Its totient is φ = 49144474656.

The previous prime is 122861186639. The next prime is 122861186687. The reversal of 122861186660 is 66681168221.

It can be written as a sum of positive squares in 2 ways, for example, as 81722800384 + 41138386276 = 285872^2 + 202826^2 .

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 3 ways as a sum of consecutive naturals, for example, 3071529647 + ... + 3071529686.

It is an arithmetic number, because the mean of its divisors is an integer number (21500707669).

Almost surely, 2^122861186660 is an apocalyptic number.

122861186660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122861186660 is an abundant number, since it is smaller than the sum of its proper divisors (135147305368).

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

122861186660 is a wasteful number, since it uses less digits than its factorization.

122861186660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143059342 (or 6143059340 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 122861186660 in words is "one hundred twenty-two billion, eight hundred sixty-one million, one hundred eighty-six thousand, six hundred sixty".