221132012317 has 2 divisors, whose sum is σ = 221132012318. Its totient is φ = 221132012316.

The previous prime is 221132012279. The next prime is 221132012329. The reversal of 221132012317 is 713210231122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219643132921 + 1488879396 = 468661^2 + 38586^2 .

It is a cyclic number.

It is not a de Polignac number, because 221132012317 - 2³¹ = 218984528669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221132012291 and 221132012300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221132012617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110566006158 + 110566006159.

It is an arithmetic number, because the mean of its divisors is an integer number (110566006159).

Almost surely, 2^221132012317 is an apocalyptic number.

It is an amenable number.

221132012317 is a deficient number, since it is larger than the sum of its proper divisors (1).

221132012317 is an equidigital number, since it uses as much as digits as its factorization.

221132012317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 221132012317 its reverse (713210231122), we get a palindrome (934342243439).

The spelling of 221132012317 in words is "two hundred twenty-one billion, one hundred thirty-two million, twelve thousand, three hundred seventeen".