121421115233 has 4 divisors (see below), whose sum is σ = 132459398448. Its totient is φ = 110382832020.

The previous prime is 121421115169. The next prime is 121421115241. The reversal of 121421115233 is 332511124121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 332511124121 = 11 ⋅30228284011.

It is a cyclic number.

It is not a de Polignac number, because 121421115233 - 2⁶ = 121421115169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121421115433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5519141591 + ... + 5519141612.

It is an arithmetic number, because the mean of its divisors is an integer number (33114849612).

Almost surely, 2^121421115233 is an apocalyptic number.

It is an amenable number.

121421115233 is a deficient number, since it is larger than the sum of its proper divisors (11038283215).

121421115233 is a wasteful number, since it uses less digits than its factorization.

121421115233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11038283214.

The product of its digits is 1440, while the sum is 26.

Adding to 121421115233 its reverse (332511124121), we get a palindrome (453932239354).

The spelling of 121421115233 in words is "one hundred twenty-one billion, four hundred twenty-one million, one hundred fifteen thousand, two hundred thirty-three".