121313131301001 has 4 divisors (see below), whose sum is σ = 161750841734672. Its totient is φ = 80875420867332.

The previous prime is 121313131300997. The next prime is 121313131301027. The reversal of 121313131301001 is 100103131313121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121313131301001 - 2² = 121313131300997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121313131301501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20218855216831 + ... + 20218855216836.

It is an arithmetic number, because the mean of its divisors is an integer number (40437710433668).

Almost surely, 2^{121313131301001} is an apocalyptic number.

It is an amenable number.

121313131301001 is a deficient number, since it is larger than the sum of its proper divisors (40437710433671).

121313131301001 is an equidigital number, since it uses as much as digits as its factorization.

121313131301001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40437710433670.

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

Adding to 121313131301001 its reverse (100103131313121), we get a palindrome (221416262614122).

The spelling of 121313131301001 in words is "one hundred twenty-one trillion, three hundred thirteen billion, one hundred thirty-one million, three hundred one thousand, one".