121313203131 has 8 divisors (see below), whose sum is σ = 163699744320. Its totient is φ = 79901065352.

The previous prime is 121313203069. The next prime is 121313203147. The reversal of 121313203131 is 131302313121.

It is a happy number.

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 121313203131 - 2¹⁴ = 121313186747 is a prime.

It is a super-2 number, since 2×121313203131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121313203098 and 121313203107.

It is not an unprimeable number, because it can be changed into a prime (121313203181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243600561 + ... + 243601058.

It is an arithmetic number, because the mean of its divisors is an integer number (20462468040).

Almost surely, 2^121313203131 is an apocalyptic number.

121313203131 is a deficient number, since it is larger than the sum of its proper divisors (42386541189).

121313203131 is an equidigital number, since it uses as much as digits as its factorization.

121313203131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487201705.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 121313203131 its reverse (131302313121), we get a palindrome (252615516252).

The spelling of 121313203131 in words is "one hundred twenty-one billion, three hundred thirteen million, two hundred three thousand, one hundred thirty-one".