212222210111 has 2 divisors, whose sum is σ = 212222210112. Its totient is φ = 212222210110.

The previous prime is 212222210041. The next prime is 212222210143. The reversal of 212222210111 is 111012222212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212222210111 - 2¹⁸ = 212221947967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212222210111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212222210411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111105055 + 106111105056.

It is an arithmetic number, because the mean of its divisors is an integer number (106111105056).

Almost surely, 2^212222210111 is an apocalyptic number.

212222210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222210111 is an equidigital number, since it uses as much as digits as its factorization.

212222210111 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 17.

Adding to 212222210111 its reverse (111012222212), we get a palindrome (323234432323).

The spelling of 212222210111 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred ten thousand, one hundred eleven".