113221443021 has 8 divisors (see below), whose sum is σ = 151008980160. Its totient is φ = 75457433952.

The previous prime is 113221443001. The next prime is 113221443029. The reversal of 113221443021 is 120344122311.

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

It is a de Polignac number, because none of the positive numbers 2^k-113221443021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113221442982 and 113221443000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221443029) 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, 5870785 + ... + 5890038.

It is an arithmetic number, because the mean of its divisors is an integer number (18876122520).

Almost surely, 2^113221443021 is an apocalyptic number.

It is an amenable number.

113221443021 is a deficient number, since it is larger than the sum of its proper divisors (37787537139).

113221443021 is a wasteful number, since it uses less digits than its factorization.

113221443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11764035.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 113221443021 its reverse (120344122311), we get a palindrome (233565565332).

The spelling of 113221443021 in words is "one hundred thirteen billion, two hundred twenty-one million, four hundred forty-three thousand, twenty-one".