222111012110111 has 2 divisors, whose sum is σ = 222111012110112. Its totient is φ = 222111012110110.

The previous prime is 222111012110101. The next prime is 222111012110131. The reversal of 222111012110111 is 111011210111222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222111012110111 - 2⁴² = 217712965599007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222111012110111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222111012110101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111055506055055 + 111055506055056.

It is an arithmetic number, because the mean of its divisors is an integer number (111055506055056).

Almost surely, 2^{222111012110111} is an apocalyptic number.

222111012110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

222111012110111 is an equidigital number, since it uses as much as digits as its factorization.

222111012110111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 222111012110111 its reverse (111011210111222), we get a palindrome (333122222221333).

The spelling of 222111012110111 in words is "two hundred twenty-two trillion, one hundred eleven billion, twelve million, one hundred ten thousand, one hundred eleven".