122621136672 has 24 divisors (see below), whose sum is σ = 321880484016. Its totient is φ = 40873712192.

The previous prime is 122621136623. The next prime is 122621136683. The reversal of 122621136672 is 276631126221.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 122621136672.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638651658 + ... + 638651849.

It is an arithmetic number, because the mean of its divisors is an integer number (13411686834).

Almost surely, 2^122621136672 is an apocalyptic number.

122621136672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122621136672 is an abundant number, since it is smaller than the sum of its proper divisors (199259347344).

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

122621136672 is a wasteful number, since it uses less digits than its factorization.

122621136672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277303520 (or 1277303512 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The spelling of 122621136672 in words is "one hundred twenty-two billion, six hundred twenty-one million, one hundred thirty-six thousand, six hundred seventy-two".