1101111211999 has 2 divisors, whose sum is σ = 1101111212000. Its totient is φ = 1101111211998.

The previous prime is 1101111211951. The next prime is 1101111212021. The reversal of 1101111211999 is 9991121111011.

It is a strong prime.

It is an emirp because it is prime and its reverse (9991121111011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101111211999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101111211909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550555605999 + 550555606000.

It is an arithmetic number, because the mean of its divisors is an integer number (550555606000).

Almost surely, 2^{1101111211999} is an apocalyptic number.

1101111211999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101111211999 is an equidigital number, since it uses as much as digits as its factorization.

1101111211999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 37.

The spelling of 1101111211999 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred eleven thousand, nine hundred ninety-nine".