2221112122111 has 2 divisors, whose sum is σ = 2221112122112. Its totient is φ = 2221112122110.

The previous prime is 2221112122093. The next prime is 2221112122129. The reversal of 2221112122111 is 1112212111222.

It is a happy number.

2221112122111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2221112122093) and next prime (2221112122129).

It is a cyclic number.

It is not a de Polignac number, because 2221112122111 - 2⁷ = 2221112121983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221112122511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110556061055 + 1110556061056.

It is an arithmetic number, because the mean of its divisors is an integer number (1110556061056).

Almost surely, 2^{2221112122111} is an apocalyptic number.

2221112122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221112122111 is an equidigital number, since it uses as much as digits as its factorization.

2221112122111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2221112122111 its reverse (1112212111222), we get a palindrome (3333324233333).

The spelling of 2221112122111 in words is "two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, one hundred eleven".