1100111212087 has 2 divisors, whose sum is σ = 1100111212088. Its totient is φ = 1100111212086.

The previous prime is 1100111212027. The next prime is 1100111212121. The reversal of 1100111212087 is 7802121110011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1100111212087 - 2²⁷ = 1099976994359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100111212007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550055606043 + 550055606044.

It is an arithmetic number, because the mean of its divisors is an integer number (550055606044).

Almost surely, 2^{1100111212087} is an apocalyptic number.

1100111212087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100111212087 is an equidigital number, since it uses as much as digits as its factorization.

1100111212087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 25.

Adding to 1100111212087 its reverse (7802121110011), we get a palindrome (8902232322098).

The spelling of 1100111212087 in words is "one trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, eighty-seven".