121313231113131 has 48 divisors (see below), whose sum is σ = 178683249888000. Its totient is φ = 79284309249600.

The previous prime is 121313231113111. The next prime is 121313231113153. The reversal of 121313231113131 is 131311132313121.

121313231113131 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 1 + 32 + 311 + 1 + 313 + 1 = 666.

It is not a de Polignac number, because 121313231113131 - 2¹⁷ = 121313230982059 is a prime.

It is a super-2 number, since 2×121313231113131² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121313231113095 and 121313231113104.

It is not an unprimeable number, because it can be changed into a prime (121313231113111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8116218600 + ... + 8116233546.

It is an arithmetic number, because the mean of its divisors is an integer number (3722567706000).

Almost surely, 2^{121313231113131} is an apocalyptic number.

121313231113131 is a deficient number, since it is larger than the sum of its proper divisors (57370018774869).

121313231113131 is a wasteful number, since it uses less digits than its factorization.

121313231113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27856 (or 27853 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

Adding to 121313231113131 its reverse (131311132313121), we get a palindrome (252624363426252).

The spelling of 121313231113131 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred thirty-one million, one hundred thirteen thousand, one hundred thirty-one".