1112220211111 has 2 divisors, whose sum is σ = 1112220211112. Its totient is φ = 1112220211110.

The previous prime is 1112220211103. The next prime is 1112220211127. The reversal of 1112220211111 is 1111120222111.

It is an a-pointer prime, because the next prime (1112220211127) can be obtained adding 1112220211111 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1112220211111 - 2³ = 1112220211103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112220211171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556110105555 + 556110105556.

It is an arithmetic number, because the mean of its divisors is an integer number (556110105556).

Almost surely, 2^{1112220211111} is an apocalyptic number.

1112220211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112220211111 is an equidigital number, since it uses as much as digits as its factorization.

1112220211111 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 16.

Adding to 1112220211111 its reverse (1111120222111), we get a palindrome (2223340433222).

The spelling of 1112220211111 in words is "one trillion, one hundred twelve billion, two hundred twenty million, two hundred eleven thousand, one hundred eleven".