113323021002 has 80 divisors (see below), whose sum is σ = 260326974600. Its totient is φ = 36823818240.

The previous prime is 113323020989. The next prime is 113323021081. The reversal of 113323021002 is 200120323311.

It can be written as a sum of positive squares in 4 ways, for example, as 72313125921 + 41009895081 = 268911^2 + 202509^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9352524 + ... + 9364632.

Almost surely, 2^113323021002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113323021002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130163487300).

113323021002 is an abundant number, since it is smaller than the sum of its proper divisors (147003953598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113323021002 is a wasteful number, since it uses less digits than its factorization.

113323021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13573 (or 13564 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 113323021002 its reverse (200120323311), we get a palindrome (313443344313).

The spelling of 113323021002 in words is "one hundred thirteen billion, three hundred twenty-three million, twenty-one thousand, two".