113211113310221 has 2 divisors, whose sum is σ = 113211113310222. Its totient is φ = 113211113310220.

The previous prime is 113211113310181. The next prime is 113211113310263. The reversal of 113211113310221 is 122013311112311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104959799610121 + 8251313700100 = 10244989^2 + 2872510^2 .

It is a cyclic number.

It is not a de Polignac number, because 113211113310221 - 2¹⁰ = 113211113309197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113211113312221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56605556655110 + 56605556655111.

It is an arithmetic number, because the mean of its divisors is an integer number (56605556655111).

Almost surely, 2^{113211113310221} is an apocalyptic number.

It is an amenable number.

113211113310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113211113310221 is an equidigital number, since it uses as much as digits as its factorization.

113211113310221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 113211113310221 its reverse (122013311112311), we get a palindrome (235224424422532).

The spelling of 113211113310221 in words is "one hundred thirteen trillion, two hundred eleven billion, one hundred thirteen million, three hundred ten thousand, two hundred twenty-one".