1222112201111 has 2 divisors, whose sum is σ = 1222112201112. Its totient is φ = 1222112201110.

The previous prime is 1222112201077. The next prime is 1222112201147. The reversal of 1222112201111 is 1111022112221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222112201111 - 2²² = 1222108006807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222112201111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222112201171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611056100555 + 611056100556.

It is an arithmetic number, because the mean of its divisors is an integer number (611056100556).

Almost surely, 2^{1222112201111} is an apocalyptic number.

1222112201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222112201111 is an equidigital number, since it uses as much as digits as its factorization.

1222112201111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222112201111 its reverse (1111022112221), we get a palindrome (2333134313332).

The spelling of 1222112201111 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, two hundred one thousand, one hundred eleven".