121330111331 has 16 divisors (see below), whose sum is σ = 143952990048. Its totient is φ = 100807392000.

The previous prime is 121330111303. The next prime is 121330111333. The reversal of 121330111331 is 133111033121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121330111331 is a prime.

It is a super-2 number, since 2×121330111331² (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 (121330111333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4185866 + ... + 4214751.

It is an arithmetic number, because the mean of its divisors is an integer number (8997061878).

Almost surely, 2^121330111331 is an apocalyptic number.

121330111331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121330111331 is a deficient number, since it is larger than the sum of its proper divisors (22622878717).

121330111331 is a wasteful number, since it uses less digits than its factorization.

121330111331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400742.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 121330111331 its reverse (133111033121), we get a palindrome (254441144452).

The spelling of 121330111331 in words is "one hundred twenty-one billion, three hundred thirty million, one hundred eleven thousand, three hundred thirty-one".