221094371 has 2 divisors, whose sum is σ = 221094372. Its totient is φ = 221094370.

The previous prime is 221094337. The next prime is 221094383. The reversal of 221094371 is 173490122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221094371 is a prime.

It is not a weakly prime, because it can be changed into another prime (221094301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110547185 + 110547186.

It is an arithmetic number, because the mean of its divisors is an integer number (110547186).

Almost surely, 2^221094371 is an apocalyptic number.

221094371 is a deficient number, since it is larger than the sum of its proper divisors (1).

221094371 is an equidigital number, since it uses as much as digits as its factorization.

221094371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 221094371 is about 14869.2424487598. The cubic root of 221094371 is about 604.6804049329.

The spelling of 221094371 in words is "two hundred twenty-one million, ninety-four thousand, three hundred seventy-one".