121311933 has 4 divisors (see below), whose sum is σ = 161749248. Its totient is φ = 80874620.

The previous prime is 121311923. The next prime is 121311961. The reversal of 121311933 is 339113121.

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 not a de Polignac number, because 121311933 - 2¹⁰ = 121310909 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311923) 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, 20218653 + ... + 20218658.

It is an arithmetic number, because the mean of its divisors is an integer number (40437312).

Almost surely, 2^121311933 is an apocalyptic number.

It is an amenable number.

121311933 is a deficient number, since it is larger than the sum of its proper divisors (40437315).

121311933 is an equidigital number, since it uses as much as digits as its factorization.

121311933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40437314.

The product of its digits is 486, while the sum is 24.

The square root of 121311933 is about 11014.1696464146. The cubic root of 121311933 is about 495.0334065812.

The spelling of 121311933 in words is "one hundred twenty-one million, three hundred eleven thousand, nine hundred thirty-three".