113321310221 has 4 divisors (see below), whose sum is σ = 129510068832. Its totient is φ = 97132551612.

The previous prime is 113321310211. The next prime is 113321310251. The reversal of 113321310221 is 122013123311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122013123311 = 251 ⋅486108061.

It is a cyclic number.

It is not a de Polignac number, because 113321310221 - 2¹⁰ = 113321309197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113321310193 and 113321310202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113321310211) 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, 8094379295 + ... + 8094379308.

It is an arithmetic number, because the mean of its divisors is an integer number (32377517208).

Almost surely, 2^113321310221 is an apocalyptic number.

It is an amenable number.

113321310221 is a deficient number, since it is larger than the sum of its proper divisors (16188758611).

113321310221 is an equidigital number, since it uses as much as digits as its factorization.

113321310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16188758610.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113321310221 its reverse (122013123311), we get a palindrome (235334433532).

The spelling of 113321310221 in words is "one hundred thirteen billion, three hundred twenty-one million, three hundred ten thousand, two hundred twenty-one".