222100221122111 has 2 divisors, whose sum is σ = 222100221122112. Its totient is φ = 222100221122110.

The previous prime is 222100221122107. The next prime is 222100221122141. The reversal of 222100221122111 is 111221122001222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222100221122111 - 2² = 222100221122107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222100221122141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111050110561055 + 111050110561056.

It is an arithmetic number, because the mean of its divisors is an integer number (111050110561056).

Almost surely, 2^{222100221122111} is an apocalyptic number.

222100221122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

222100221122111 is an equidigital number, since it uses as much as digits as its factorization.

222100221122111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222100221122111 its reverse (111221122001222), we get a palindrome (333321343123333).

The spelling of 222100221122111 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred eleven".