121121310111313 has 4 divisors (see below), whose sum is σ = 121124673974080. Its totient is φ = 121117946248548.

The previous prime is 121121310111311. The next prime is 121121310111323. The reversal of 121121310111313 is 313111013121121.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 121121310111313 - 2¹ = 121121310111311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121310111311) 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, 1681877373 + ... + 1681949386.

It is an arithmetic number, because the mean of its divisors is an integer number (30281168493520).

Almost surely, 2^{121121310111313} is an apocalyptic number.

It is an amenable number.

121121310111313 is a deficient number, since it is larger than the sum of its proper divisors (3363862767).

121121310111313 is an equidigital number, since it uses as much as digits as its factorization.

121121310111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363862766.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 121121310111313 its reverse (313111013121121), we get a palindrome (434232323232434).

The spelling of 121121310111313 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, three hundred ten million, one hundred eleven thousand, three hundred thirteen".