121331311113 has 8 divisors (see below), whose sum is σ = 164827441728. Its totient is φ = 79361360624.

The previous prime is 121331311081. The next prime is 121331311117. The reversal of 121331311113 is 311113133121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121331311113 - 2⁵ = 121331311081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121331311113.

It is not an unprimeable number, because it can be changed into a prime (121331311117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381544845 + ... + 381545162.

It is an arithmetic number, because the mean of its divisors is an integer number (20603430216).

Almost surely, 2^121331311113 is an apocalyptic number.

It is an amenable number.

121331311113 is a deficient number, since it is larger than the sum of its proper divisors (43496130615).

121331311113 is an equidigital number, since it uses as much as digits as its factorization.

121331311113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763090063.

The product of its digits is 162, while the sum is 21.

Adding to 121331311113 its reverse (311113133121), we get a palindrome (432444444234).

The spelling of 121331311113 in words is "one hundred twenty-one billion, three hundred thirty-one million, three hundred eleven thousand, one hundred thirteen".