222010091 has 2 divisors, whose sum is σ = 222010092. Its totient is φ = 222010090.

The previous prime is 222010081. The next prime is 222010111. The reversal of 222010091 is 190010222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222010091 is a prime.

It is equal to p_12227102 and since 222010091 and 12227102 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (222010081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111005045 + 111005046.

It is an arithmetic number, because the mean of its divisors is an integer number (111005046).

Almost surely, 2^222010091 is an apocalyptic number.

222010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

222010091 is an equidigital number, since it uses as much as digits as its factorization.

222010091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 222010091 is about 14900.0030536910. The cubic root of 222010091 is about 605.5140689113.

The spelling of 222010091 in words is "two hundred twenty-two million, ten thousand, ninety-one".