113121102020321 has 8 divisors (see below), whose sum is σ = 113369078219784. Its totient is φ = 112873334999040.

The previous prime is 113121102020309. The next prime is 113121102020341. The reversal of 113121102020321 is 123020201121311.

It can be written as a sum of positive squares in 4 ways, for example, as 30803388006400 + 82317714013921 = 5550080^2 + 9072911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113121102020321 - 2¹⁸ = 113121101758177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113121102020293 and 113121102020302.

It is not an unprimeable number, because it can be changed into a prime (113121102020341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51211760 + ... + 53374961.

It is an arithmetic number, because the mean of its divisors is an integer number (14171134777473).

Almost surely, 2^{113121102020321} is an apocalyptic number.

It is an amenable number.

113121102020321 is a deficient number, since it is larger than the sum of its proper divisors (247976199463).

113121102020321 is a wasteful number, since it uses less digits than its factorization.

113121102020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104589091.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 113121102020321 its reverse (123020201121311), we get a palindrome (236141303141632).

The spelling of 113121102020321 in words is "one hundred thirteen trillion, one hundred twenty-one billion, one hundred two million, twenty thousand, three hundred twenty-one".