121010101313 has 4 divisors (see below), whose sum is σ = 121021859028. Its totient is φ = 120998343600.

The previous prime is 121010101283. The next prime is 121010101339. The reversal of 121010101313 is 313101010121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313101010121 = 137 ⋅2285408833.

It can be written as a sum of positive squares in 2 ways, for example, as 86426004289 + 34584097024 = 293983^2 + 185968^2 .

It is a cyclic number.

It is not a de Polignac number, because 121010101313 - 2²⁶ = 120942992449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121010101343) 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, 5863406 + ... + 5884007.

It is an arithmetic number, because the mean of its divisors is an integer number (30255464757).

Almost surely, 2^121010101313 is an apocalyptic number.

It is an amenable number.

121010101313 is a deficient number, since it is larger than the sum of its proper divisors (11757715).

121010101313 is a wasteful number, since it uses less digits than its factorization.

121010101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11757714.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 121010101313 its reverse (313101010121), we get a palindrome (434111111434).

The spelling of 121010101313 in words is "one hundred twenty-one billion, ten million, one hundred one thousand, three hundred thirteen".