111112202111 has 2 divisors, whose sum is σ = 111112202112. Its totient is φ = 111112202110.

The previous prime is 111112202087. The next prime is 111112202137. The reversal of 111112202111 is 111202211111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111112202111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111112232111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556101055 + 55556101056.

It is an arithmetic number, because the mean of its divisors is an integer number (55556101056).

Almost surely, 2^111112202111 is an apocalyptic number.

111112202111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112202111 is an equidigital number, since it uses as much as digits as its factorization.

111112202111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111112202111 its reverse (111202211111), we get a palindrome (222314413222).

The spelling of 111112202111 in words is "one hundred eleven billion, one hundred twelve million, two hundred two thousand, one hundred eleven".