113323321021 has 8 divisors (see below), whose sum is σ = 115188870744. Its totient is φ = 111458022720.

The previous prime is 113323321003. The next prime is 113323321037. The reversal of 113323321021 is 120123323311.

It can be written as a sum of positive squares in 4 ways, for example, as 37855539225 + 75467781796 = 194565^2 + 274714^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113323321021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113323320983 and 113323321001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113323321921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989871 + ... + 1098403.

It is an arithmetic number, because the mean of its divisors is an integer number (14398608843).

Almost surely, 2^113323321021 is an apocalyptic number.

It is an amenable number.

113323321021 is a deficient number, since it is larger than the sum of its proper divisors (1865549723).

113323321021 is a wasteful number, since it uses less digits than its factorization.

113323321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125711.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 113323321021 its reverse (120123323311), we get a palindrome (233446644332).

The spelling of 113323321021 in words is "one hundred thirteen billion, three hundred twenty-three million, three hundred twenty-one thousand, twenty-one".