121011201313 has 4 divisors (see below), whose sum is σ = 121679771668. Its totient is φ = 120342630960.

The previous prime is 121011201293. The next prime is 121011201347. The reversal of 121011201313 is 313102110121.

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: 313102110121 = 114593 ⋅2732297.

It can be written as a sum of positive squares in 2 ways, for example, as 37763371584 + 83247829729 = 194328^2 + 288527^2 .

It is a cyclic number.

It is not a de Polignac number, because 121011201313 - 2⁵ = 121011201281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011201383) 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, 334284906 + ... + 334285267.

It is an arithmetic number, because the mean of its divisors is an integer number (30419942917).

Almost surely, 2^121011201313 is an apocalyptic number.

It is an amenable number.

121011201313 is a deficient number, since it is larger than the sum of its proper divisors (668570355).

121011201313 is an equidigital number, since it uses as much as digits as its factorization.

121011201313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668570354.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121011201313 its reverse (313102110121), we get a palindrome (434113311434).

The spelling of 121011201313 in words is "one hundred twenty-one billion, eleven million, two hundred one thousand, three hundred thirteen".