221332203321253 has 2 divisors, whose sum is σ = 221332203321254. Its totient is φ = 221332203321252.

The previous prime is 221332203321233. The next prime is 221332203321259. The reversal of 221332203321253 is 352123302233122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191395963475649 + 29936239845604 = 13834593^2 + 5471402^2 .

It is a cyclic number.

It is not a de Polignac number, because 221332203321253 - 2⁹ = 221332203320741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221332203321259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110666101660626 + 110666101660627.

It is an arithmetic number, because the mean of its divisors is an integer number (110666101660627).

Almost surely, 2^{221332203321253} is an apocalyptic number.

It is an amenable number.

221332203321253 is a deficient number, since it is larger than the sum of its proper divisors (1).

221332203321253 is an equidigital number, since it uses as much as digits as its factorization.

221332203321253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 221332203321253 its reverse (352123302233122), we get a palindrome (573455505554375).

The spelling of 221332203321253 in words is "two hundred twenty-one trillion, three hundred thirty-two billion, two hundred three million, three hundred twenty-one thousand, two hundred fifty-three".