122294921728 has 80 divisors (see below), whose sum is σ = 280418998464. Its totient is φ = 52194263040.

The previous prime is 122294921719. The next prime is 122294921813. The reversal of 122294921728 is 827129492221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792951 + ... + 934537.

Almost surely, 2^122294921728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122294921728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140209499232).

122294921728 is an abundant number, since it is smaller than the sum of its proper divisors (158124076736).

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

122294921728 is an equidigital number, since it uses as much as digits as its factorization.

122294921728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141853 (or 141837 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The spelling of 122294921728 in words is "one hundred twenty-two billion, two hundred ninety-four million, nine hundred twenty-one thousand, seven hundred twenty-eight".