210210222091 has 2 divisors, whose sum is σ = 210210222092. Its totient is φ = 210210222090.

The previous prime is 210210221989. The next prime is 210210222113. The reversal of 210210222091 is 190222012012.

It is an a-pointer prime, because the next prime (210210222113) can be obtained adding 210210222091 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210210222091 - 2²⁷ = 210076004363 is a prime.

It is not a weakly prime, because it can be changed into another prime (210210226091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105105111045 + 105105111046.

It is an arithmetic number, because the mean of its divisors is an integer number (105105111046).

Almost surely, 2^210210222091 is an apocalyptic number.

210210222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

210210222091 is an equidigital number, since it uses as much as digits as its factorization.

210210222091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 210210222091 in words is "two hundred ten billion, two hundred ten million, two hundred twenty-two thousand, ninety-one".