12121303022111 has 4 divisors (see below), whose sum is σ = 12123119498592. Its totient is φ = 12119486545632.

The previous prime is 12121303022099. The next prime is 12121303022119. The reversal of 12121303022111 is 11122030312121.

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

It is a cyclic number.

It is not a de Polignac number, because 12121303022111 - 2²⁶ = 12121235913247 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 (12121303022119) 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, 908228231 + ... + 908241576.

It is an arithmetic number, because the mean of its divisors is an integer number (3030779874648).

Almost surely, 2^{12121303022111} is an apocalyptic number.

12121303022111 is a deficient number, since it is larger than the sum of its proper divisors (1816476481).

12121303022111 is an equidigital number, since it uses as much as digits as its factorization.

12121303022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816476480.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12121303022111 its reverse (11122030312121), we get a palindrome (23243333334232).

The spelling of 12121303022111 in words is "twelve trillion, one hundred twenty-one billion, three hundred three million, twenty-two thousand, one hundred eleven".