113221200221 has 2 divisors, whose sum is σ = 113221200222. Its totient is φ = 113221200220.

The previous prime is 113221200143. The next prime is 113221200227. The reversal of 113221200221 is 122002122311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78504194596 + 34717005625 = 280186^2 + 186325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113221200221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113221200221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113221200227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610600110 + 56610600111.

It is an arithmetic number, because the mean of its divisors is an integer number (56610600111).

Almost surely, 2^113221200221 is an apocalyptic number.

It is an amenable number.

113221200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221200221 is an equidigital number, since it uses as much as digits as its factorization.

113221200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 113221200221 its reverse (122002122311), we get a palindrome (235223322532).

The spelling of 113221200221 in words is "one hundred thirteen billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".