113021112221 has 4 divisors (see below), whose sum is σ = 114612958944. Its totient is φ = 111429265500.

The previous prime is 113021112037. The next prime is 113021112227. The reversal of 113021112221 is 122211120311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113021112221 - 2¹⁰ = 113021111197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113021112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113021112227) 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 3 ways as a sum of consecutive naturals, for example, 795923255 + ... + 795923396.

It is an arithmetic number, because the mean of its divisors is an integer number (28653239736).

Almost surely, 2^113021112221 is an apocalyptic number.

It is an amenable number.

113021112221 is a deficient number, since it is larger than the sum of its proper divisors (1591846723).

113021112221 is an equidigital number, since it uses as much as digits as its factorization.

113021112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591846722.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 113021112221 its reverse (122211120311), we get a palindrome (235232232532).

The spelling of 113021112221 in words is "one hundred thirteen billion, twenty-one million, one hundred twelve thousand, two hundred twenty-one".