222100212112111 has 2 divisors, whose sum is σ = 222100212112112. Its totient is φ = 222100212112110.

The previous prime is 222100212112021. The next prime is 222100212112117. The reversal of 222100212112111 is 111211212001222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222100212112111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222100212112117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111050106056055 + 111050106056056.

It is an arithmetic number, because the mean of its divisors is an integer number (111050106056056).

Almost surely, 2^{222100212112111} is an apocalyptic number.

222100212112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

222100212112111 is an equidigital number, since it uses as much as digits as its factorization.

222100212112111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222100212112111 its reverse (111211212001222), we get a palindrome (333311424113333).

The spelling of 222100212112111 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twelve million, one hundred twelve thousand, one hundred eleven".