121333401311 has 4 divisors (see below), whose sum is σ = 121351102992. Its totient is φ = 121315699632.

The previous prime is 121333401257. The next prime is 121333401323. The reversal of 121333401311 is 113104333121.

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 121333401311 - 2²⁶ = 121266292447 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 (121333401331) 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, 8840555 + ... + 8854268.

It is an arithmetic number, because the mean of its divisors is an integer number (30337775748).

Almost surely, 2^121333401311 is an apocalyptic number.

121333401311 is a deficient number, since it is larger than the sum of its proper divisors (17701681).

121333401311 is an equidigital number, since it uses as much as digits as its factorization.

121333401311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17701680.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121333401311 its reverse (113104333121), we get a palindrome (234437734432).

The spelling of 121333401311 in words is "one hundred twenty-one billion, three hundred thirty-three million, four hundred one thousand, three hundred eleven".