221114287 has 2 divisors, whose sum is σ = 221114288. Its totient is φ = 221114286.

The previous prime is 221114281. The next prime is 221114297. The reversal of 221114287 is 782411122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221114287 - 2¹¹ = 221112239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221114281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110557143 + 110557144.

It is an arithmetic number, because the mean of its divisors is an integer number (110557144).

Almost surely, 2^221114287 is an apocalyptic number.

221114287 is a deficient number, since it is larger than the sum of its proper divisors (1).

221114287 is an equidigital number, since it uses as much as digits as its factorization.

221114287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 28.

The square root of 221114287 is about 14869.9121382744. The cubic root of 221114287 is about 604.6985607598.

The spelling of 221114287 in words is "two hundred twenty-one million, one hundred fourteen thousand, two hundred eighty-seven".