121013001331 has 16 divisors (see below), whose sum is σ = 129921084864. Its totient is φ = 112304600064.

The previous prime is 121013001301. The next prime is 121013001341. The reversal of 121013001331 is 133100310121.

It is a cyclic number.

It is not a de Polignac number, because 121013001331 - 2¹⁵ = 121012968563 is a prime.

It is a super-2 number, since 2×121013001331² (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 (121013001301) 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, 5676865 + ... + 5698141.

It is an arithmetic number, because the mean of its divisors is an integer number (8120067804).

Almost surely, 2^121013001331 is an apocalyptic number.

121013001331 is a deficient number, since it is larger than the sum of its proper divisors (8908083533).

121013001331 is a wasteful number, since it uses less digits than its factorization.

121013001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25950.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 121013001331 its reverse (133100310121), we get a palindrome (254113311452).

The spelling of 121013001331 in words is "one hundred twenty-one billion, thirteen million, one thousand, three hundred thirty-one".