221117339 has 2 divisors, whose sum is σ = 221117340. Its totient is φ = 221117338.

The previous prime is 221117329. The next prime is 221117399. The reversal of 221117339 is 933711122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221117339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221117329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110558669 + 110558670.

It is an arithmetic number, because the mean of its divisors is an integer number (110558670).

Almost surely, 2^221117339 is an apocalyptic number.

221117339 is a deficient number, since it is larger than the sum of its proper divisors (1).

221117339 is an equidigital number, since it uses as much as digits as its factorization.

221117339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 221117339 is about 14870.0147612570. The cubic root of 221117339 is about 604.7013429281.

The spelling of 221117339 in words is "two hundred twenty-one million, one hundred seventeen thousand, three hundred thirty-nine".