221214089 has 2 divisors, whose sum is σ = 221214090. Its totient is φ = 221214088.

The previous prime is 221214073. The next prime is 221214127. The reversal of 221214089 is 980412122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215854864 + 5359225 = 14692^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 221214089 - 2⁴ = 221214073 is a prime.

It is not a weakly prime, because it can be changed into another prime (221214589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110607044 + 110607045.

It is an arithmetic number, because the mean of its divisors is an integer number (110607045).

Almost surely, 2^221214089 is an apocalyptic number.

It is an amenable number.

221214089 is a deficient number, since it is larger than the sum of its proper divisors (1).

221214089 is an equidigital number, since it uses as much as digits as its factorization.

221214089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 221214089 is about 14873.2675965976. The cubic root of 221214089 is about 604.7895258575.

The spelling of 221214089 in words is "two hundred twenty-one million, two hundred fourteen thousand, eighty-nine".