202222091 has 2 divisors, whose sum is σ = 202222092. Its totient is φ = 202222090.

The previous prime is 202222081. The next prime is 202222109. The reversal of 202222091 is 190222202.

Together with next prime (202222109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202222091 - 2¹⁰ = 202221067 is a prime.

It is a Chen prime.

It is equal to p_11195210 and since 202222091 and 11195210 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 (202222081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101111045 + 101111046.

It is an arithmetic number, because the mean of its divisors is an integer number (101111046).

Almost surely, 2^202222091 is an apocalyptic number.

202222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

202222091 is an equidigital number, since it uses as much as digits as its factorization.

202222091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 202222091 is about 14220.4813912891. The cubic root of 202222091 is about 586.9613869060.

Adding to 202222091 its reverse (190222202), we get a palindrome (392444293).

The spelling of 202222091 in words is "two hundred two million, two hundred twenty-two thousand, ninety-one".