1100120009987 has 2 divisors, whose sum is σ = 1100120009988. Its totient is φ = 1100120009986.

The previous prime is 1100120009977. The next prime is 1100120010037. The reversal of 1100120009987 is 7899000210011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1100120009987 - 2⁸ = 1100120009731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100120009987.

It is not a weakly prime, because it can be changed into another prime (1100120009927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550060004993 + 550060004994.

It is an arithmetic number, because the mean of its divisors is an integer number (550060004994).

Almost surely, 2^{1100120009987} is an apocalyptic number.

1100120009987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100120009987 is an equidigital number, since it uses as much as digits as its factorization.

1100120009987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 38.

Adding to 1100120009987 its reverse (7899000210011), we get a palindrome (8999120219998).

The spelling of 1100120009987 in words is "one trillion, one hundred billion, one hundred twenty million, nine thousand, nine hundred eighty-seven".