121475407232478 has 32 divisors (see below), whose sum is σ = 262352252445696. Its totient is φ = 37275203551968.

The previous prime is 121475407232407. The next prime is 121475407232483. The reversal of 121475407232478 is 874232704574121.

It is a super-2 number, since 2×121475407232478² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2121738426 + ... + 2121795677.

It is an arithmetic number, because the mean of its divisors is an integer number (8198507888928).

Almost surely, 2^{121475407232478} is an apocalyptic number.

121475407232478 is an abundant number, since it is smaller than the sum of its proper divisors (140876845213218).

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

121475407232478 is a wasteful number, since it uses less digits than its factorization.

121475407232478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243534488.

The product of its (nonzero) digits is 21073920, while the sum is 57.

The spelling of 121475407232478 in words is "one hundred twenty-one trillion, four hundred seventy-five billion, four hundred seven million, two hundred thirty-two thousand, four hundred seventy-eight".