121331111200331 has 4 divisors (see below), whose sum is σ = 121350614680464. Its totient is φ = 121311607720200.

The previous prime is 121331111200319. The next prime is 121331111200333. The reversal of 121331111200331 is 133002111133121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121331111200331 is a prime.

It is a super-2 number, since 2×121331111200331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121331111200297 and 121331111200306.

It is not an unprimeable number, because it can be changed into a prime (121331111200333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9751730735 + ... + 9751743176.

It is an arithmetic number, because the mean of its divisors is an integer number (30337653670116).

Almost surely, 2^{121331111200331} is an apocalyptic number.

121331111200331 is a deficient number, since it is larger than the sum of its proper divisors (19503480133).

121331111200331 is an equidigital number, since it uses as much as digits as its factorization.

121331111200331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19503480132.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 121331111200331 its reverse (133002111133121), we get a palindrome (254333222333452).

The spelling of 121331111200331 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, one hundred eleven million, two hundred thousand, three hundred thirty-one".