122571672720 has 160 divisors (see below), whose sum is σ = 438470602752. Its totient is φ = 27744339456.

The previous prime is 122571672697. The next prime is 122571672733. The reversal of 122571672720 is 27276175221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 181132 + ... + 527211.

Almost surely, 2^122571672720 is an apocalyptic number.

122571672720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122571672720 is an abundant number, since it is smaller than the sum of its proper divisors (315898930032).

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

122571672720 is a wasteful number, since it uses less digits than its factorization.

122571672720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708469 (or 708463 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 122571672720 in words is "one hundred twenty-two billion, five hundred seventy-one million, six hundred seventy-two thousand, seven hundred twenty".