122811688421 has 8 divisors (see below), whose sum is σ = 128160101184. Its totient is φ = 117464006880.

The previous prime is 122811688399. The next prime is 122811688427. The reversal of 122811688421 is 124886118221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122811688421 - 2⁶ = 122811688357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122811688427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175370 + ... + 525716.

It is an arithmetic number, because the mean of its divisors is an integer number (16020012648).

Almost surely, 2^122811688421 is an apocalyptic number.

It is an amenable number.

122811688421 is a deficient number, since it is larger than the sum of its proper divisors (5348412763).

122811688421 is a wasteful number, since it uses less digits than its factorization.

122811688421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365611.

The product of its digits is 98304, while the sum is 44.

The spelling of 122811688421 in words is "one hundred twenty-two billion, eight hundred eleven million, six hundred eighty-eight thousand, four hundred twenty-one".