122451127688 has 12 divisors (see below), whose sum is σ = 229597720215. Its totient is φ = 61225068968.

The previous prime is 122451127681. The next prime is 122451127693. The reversal of 122451127688 is 886721154221.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 61225563844 + 61225563844 = 247438^2 + 247438^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247438.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122451127681) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 927893 + ... + 1051611.

Almost surely, 2^122451127688 is an apocalyptic number.

It is an amenable number.

122451127688 is a deficient number, since it is larger than the sum of its proper divisors (107146592527).

122451127688 is an frugal number, since it uses more digits than its factorization.

122451127688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247444 (or 123721 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The spelling of 122451127688 in words is "one hundred twenty-two billion, four hundred fifty-one million, one hundred twenty-seven thousand, six hundred eighty-eight".