117192221 has 2 divisors, whose sum is σ = 117192222. Its totient is φ = 117192220.

The previous prime is 117192217. The next prime is 117192233. The reversal of 117192221 is 122291711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81252196 + 35940025 = 9014^2 + 5995^2 .

It is a cyclic number.

It is not a de Polignac number, because 117192221 - 2² = 117192217 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117192721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58596110 + 58596111.

It is an arithmetic number, because the mean of its divisors is an integer number (58596111).

Almost surely, 2^117192221 is an apocalyptic number.

It is an amenable number.

117192221 is a deficient number, since it is larger than the sum of its proper divisors (1).

117192221 is an equidigital number, since it uses as much as digits as its factorization.

117192221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 26.

The square root of 117192221 is about 10825.5355987591. The cubic root of 117192221 is about 489.3650264677.

The spelling of 117192221 in words is "one hundred seventeen million, one hundred ninety-two thousand, two hundred twenty-one".