222222202120091 has 2 divisors, whose sum is σ = 222222202120092. Its totient is φ = 222222202120090.

The previous prime is 222222202119971. The next prime is 222222202120151. The reversal of 222222202120091 is 190021202222222.

222222202120091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222222202120091 - 2¹⁰ = 222222202119067 is a prime.

It is not a weakly prime, because it can be changed into another prime (222222252120091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111101060045 + 111111101060046.

It is an arithmetic number, because the mean of its divisors is an integer number (111111101060046).

Almost surely, 2^{222222202120091} is an apocalyptic number.

222222202120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222202120091 is an equidigital number, since it uses as much as digits as its factorization.

222222202120091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 222222202120091 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty thousand, ninety-one".