11100222221987 has 2 divisors, whose sum is σ = 11100222221988. Its totient is φ = 11100222221986.

The previous prime is 11100222221981. The next prime is 11100222222059. The reversal of 11100222221987 is 78912222200111.

11100222221987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11100222221987 - 2⁶ = 11100222221923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11100222221987.

It is not a weakly prime, because it can be changed into another prime (11100222221981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550111110993 + 5550111110994.

It is an arithmetic number, because the mean of its divisors is an integer number (5550111110994).

Almost surely, 2^{11100222221987} is an apocalyptic number.

11100222221987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100222221987 is an equidigital number, since it uses as much as digits as its factorization.

11100222221987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 11100222221987 in words is "eleven trillion, one hundred billion, two hundred twenty-two million, two hundred twenty-one thousand, nine hundred eighty-seven".