12210212111 has 2 divisors, whose sum is σ = 12210212112. Its totient is φ = 12210212110.

The previous prime is 12210212083. The next prime is 12210212123. The reversal of 12210212111 is 11121201221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210212111 is a prime.

It is a super-2 number, since 2×12210212111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210212711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105106055 + 6105106056.

It is an arithmetic number, because the mean of its divisors is an integer number (6105106056).

Almost surely, 2^12210212111 is an apocalyptic number.

12210212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210212111 is an equidigital number, since it uses as much as digits as its factorization.

12210212111 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 14.

Adding to 12210212111 its reverse (11121201221), we get a palindrome (23331413332).

The spelling of 12210212111 in words is "twelve billion, two hundred ten million, two hundred twelve thousand, one hundred eleven".