121331301313 has 4 divisors (see below), whose sum is σ = 122532601428. Its totient is φ = 120130001200.

The previous prime is 121331301277. The next prime is 121331301337. The reversal of 121331301313 is 313103133121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102920339344 + 18410961969 = 320812^2 + 135687^2 .

It is a cyclic number.

It is not a de Polignac number, because 121331301313 - 2⁹ = 121331300801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121331361313) 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, 600649906 + ... + 600650107.

It is an arithmetic number, because the mean of its divisors is an integer number (30633150357).

Almost surely, 2^121331301313 is an apocalyptic number.

It is an amenable number.

121331301313 is a deficient number, since it is larger than the sum of its proper divisors (1201300115).

121331301313 is a wasteful number, since it uses less digits than its factorization.

121331301313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201300114.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 121331301313 its reverse (313103133121), we get a palindrome (434434434434).

The spelling of 121331301313 in words is "one hundred twenty-one billion, three hundred thirty-one million, three hundred one thousand, three hundred thirteen".