121588227427 has 4 divisors (see below), whose sum is σ = 121590355320. Its totient is φ = 121586099536.

The previous prime is 121588227389. The next prime is 121588227437. The reversal of 121588227427 is 724722885121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121588227427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121588227437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975802 + ... + 1093327.

It is an arithmetic number, because the mean of its divisors is an integer number (30397588830).

Almost surely, 2^121588227427 is an apocalyptic number.

121588227427 is a deficient number, since it is larger than the sum of its proper divisors (2127893).

121588227427 is an equidigital number, since it uses as much as digits as its factorization.

121588227427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127892.

The product of its digits is 1003520, while the sum is 49.

The spelling of 121588227427 in words is "one hundred twenty-one billion, five hundred eighty-eight million, two hundred twenty-seven thousand, four hundred twenty-seven".