1111202012111 has 2 divisors, whose sum is σ = 1111202012112. Its totient is φ = 1111202012110.

The previous prime is 1111202012099. The next prime is 1111202012119. The reversal of 1111202012111 is 1112102021111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111202012111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111202012119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555601006055 + 555601006056.

It is an arithmetic number, because the mean of its divisors is an integer number (555601006056).

Almost surely, 2^{1111202012111} is an apocalyptic number.

1111202012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111202012111 is an equidigital number, since it uses as much as digits as its factorization.

1111202012111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1111202012111 its reverse (1112102021111), we get a palindrome (2223304033222).

The spelling of 1111202012111 in words is "one trillion, one hundred eleven billion, two hundred two million, twelve thousand, one hundred eleven".