121331303113 has 4 divisors (see below), whose sum is σ = 121333656708. Its totient is φ = 121328949520.

The previous prime is 121331303101. The next prime is 121331303117. The reversal of 121331303113 is 311303133121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311303133121 = 43 ⋅7239607747.

It can be written as a sum of positive squares in 2 ways, for example, as 24975693369 + 96355609744 = 158037^2 + 310412^2 .

It is a cyclic number.

It is not a de Polignac number, because 121331303113 - 2⁹ = 121331302601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121331303117) 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, 1097698 + ... + 1203163.

It is an arithmetic number, because the mean of its divisors is an integer number (30333414177).

Almost surely, 2^121331303113 is an apocalyptic number.

It is an amenable number.

121331303113 is a deficient number, since it is larger than the sum of its proper divisors (2353595).

121331303113 is an equidigital number, since it uses as much as digits as its factorization.

121331303113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353594.

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

Adding to 121331303113 its reverse (311303133121), we get a palindrome (432634436234).

The spelling of 121331303113 in words is "one hundred twenty-one billion, three hundred thirty-one million, three hundred three thousand, one hundred thirteen".