121333401313 has 4 divisors (see below), whose sum is σ = 121336211988. Its totient is φ = 121330590640.

The previous prime is 121333401257. The next prime is 121333401323. The reversal of 121333401313 is 313104333121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313104333121 = 491867 ⋅636563.

It can be written as a sum of positive squares in 2 ways, for example, as 9601648144 + 111731753169 = 97988^2 + 334263^2 .

It is a cyclic number.

It is not a de Polignac number, because 121333401313 - 2²¹ = 121331304161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121333401323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1339558 + ... + 1427263.

It is an arithmetic number, because the mean of its divisors is an integer number (30334052997).

Almost surely, 2^121333401313 is an apocalyptic number.

It is an amenable number.

121333401313 is a deficient number, since it is larger than the sum of its proper divisors (2810675).

121333401313 is an equidigital number, since it uses as much as digits as its factorization.

121333401313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810674.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 121333401313 its reverse (313104333121), we get a palindrome (434437734434).

The spelling of 121333401313 in words is "one hundred twenty-one billion, three hundred thirty-three million, four hundred one thousand, three hundred thirteen".