121112133331 has 4 divisors (see below), whose sum is σ = 138413866672. Its totient is φ = 103810399992.

The previous prime is 121112133293. The next prime is 121112133421. The reversal of 121112133331 is 133331211121.

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 121112133331 - 2¹³ = 121112125139 is a prime.

It is a super-2 number, since 2×121112133331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121112133931) 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, 8650866660 + ... + 8650866673.

It is an arithmetic number, because the mean of its divisors is an integer number (34603466668).

Almost surely, 2^121112133331 is an apocalyptic number.

121112133331 is a deficient number, since it is larger than the sum of its proper divisors (17301733341).

121112133331 is an equidigital number, since it uses as much as digits as its factorization.

121112133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17301733340.

The product of its digits is 324, while the sum is 22.

Adding to 121112133331 its reverse (133331211121), we get a palindrome (254443344452).

The spelling of 121112133331 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred thirty-three thousand, three hundred thirty-one".