113321013021 has 12 divisors (see below), whose sum is σ = 163901010780. Its totient is φ = 75448063680.

The previous prime is 113321012983. The next prime is 113321013053. The reversal of 113321013021 is 120310123311.

It can be written as a sum of positive squares in 2 ways, for example, as 20509390521 + 92811622500 = 143211^2 + 304650^2 .

It is not a de Polignac number, because 113321013021 - 2¹³ = 113321004829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113321012985 and 113321013003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113321013061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8265966 + ... + 8279663.

It is an arithmetic number, because the mean of its divisors is an integer number (13658417565).

Almost surely, 2^113321013021 is an apocalyptic number.

It is an amenable number.

113321013021 is a deficient number, since it is larger than the sum of its proper divisors (50579997759).

113321013021 is a wasteful number, since it uses less digits than its factorization.

113321013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16546396 (or 16546393 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 113321013021 its reverse (120310123311), we get a palindrome (233631136332).

The spelling of 113321013021 in words is "one hundred thirteen billion, three hundred twenty-one million, thirteen thousand, twenty-one".