221111031111317 has 2 divisors, whose sum is σ = 221111031111318. Its totient is φ = 221111031111316.

The previous prime is 221111031111281. The next prime is 221111031111329. The reversal of 221111031111317 is 713111130111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221047640964241 + 63390147076 = 14867671^2 + 251774^2 .

It is a cyclic number.

It is not a de Polignac number, because 221111031111317 - 2¹⁰ = 221111031110293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221111031111337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555515555658 + 110555515555659.

It is an arithmetic number, because the mean of its divisors is an integer number (110555515555659).

Almost surely, 2^{221111031111317} is an apocalyptic number.

It is an amenable number.

221111031111317 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111031111317 is an equidigital number, since it uses as much as digits as its factorization.

221111031111317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 26.

Adding to 221111031111317 its reverse (713111130111122), we get a palindrome (934222161222439).

The spelling of 221111031111317 in words is "two hundred twenty-one trillion, one hundred eleven billion, thirty-one million, one hundred eleven thousand, three hundred seventeen".