122728834572 has 12 divisors (see below), whose sum is σ = 286367280696. Its totient is φ = 40909611520.

The previous prime is 122728834537. The next prime is 122728834583. The reversal of 122728834572 is 275438827221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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, 5113701429 + ... + 5113701452.

It is an arithmetic number, because the mean of its divisors is an integer number (23863940058).

Almost surely, 2^122728834572 is an apocalyptic number.

122728834572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122728834572 is an abundant number, since it is smaller than the sum of its proper divisors (163638446124).

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

122728834572 is a wasteful number, since it uses less digits than its factorization.

122728834572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10227402888 (or 10227402886 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 51.

The spelling of 122728834572 in words is "one hundred twenty-two billion, seven hundred twenty-eight million, eight hundred thirty-four thousand, five hundred seventy-two".