121331102013 has 16 divisors (see below), whose sum is σ = 196090670400. Its totient is φ = 73534001040.

The previous prime is 121331102003. The next prime is 121331102017. The reversal of 121331102013 is 310201133121.

121331102013 is a `hidden beast` number, since 121 + 331 + 10 + 201 + 3 = 666.

It is not a de Polignac number, because 121331102013 - 2⁵ = 121331101981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331102017) 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 15 ways as a sum of consecutive naturals, for example, 204260818 + ... + 204261411.

It is an arithmetic number, because the mean of its divisors is an integer number (12255666900).

Almost surely, 2^121331102013 is an apocalyptic number.

It is an amenable number.

121331102013 is a deficient number, since it is larger than the sum of its proper divisors (74759568387).

121331102013 is a wasteful number, since it uses less digits than its factorization.

121331102013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408522249 (or 408522243 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121331102013 its reverse (310201133121), we get a palindrome (431532235134).

The spelling of 121331102013 in words is "one hundred twenty-one billion, three hundred thirty-one million, one hundred two thousand, thirteen".