121114123421 has 4 divisors (see below), whose sum is σ = 123691019712. Its totient is φ = 118537227132.

The previous prime is 121114123391. The next prime is 121114123441. The reversal of 121114123421 is 124321411121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121114123421 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 (121114123441) 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, 1288448075 + ... + 1288448168.

It is an arithmetic number, because the mean of its divisors is an integer number (30922754928).

Almost surely, 2^121114123421 is an apocalyptic number.

It is an amenable number.

121114123421 is a deficient number, since it is larger than the sum of its proper divisors (2576896291).

121114123421 is an equidigital number, since it uses as much as digits as its factorization.

121114123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576896290.

The product of its digits is 384, while the sum is 23.

Adding to 121114123421 its reverse (124321411121), we get a palindrome (245435534542).

The spelling of 121114123421 in words is "one hundred twenty-one billion, one hundred fourteen million, one hundred twenty-three thousand, four hundred twenty-one".