1110011221987 has 4 divisors (see below), whose sum is σ = 1111489266976. Its totient is φ = 1108533177000.

The previous prime is 1110011221901. The next prime is 1110011221993. The reversal of 1110011221987 is 7891221100111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1110011221987 - 2¹¹ = 1110011219939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110011222987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739021368 + ... + 739022869.

It is an arithmetic number, because the mean of its divisors is an integer number (277872316744).

Almost surely, 2^{1110011221987} is an apocalyptic number.

1110011221987 is a deficient number, since it is larger than the sum of its proper divisors (1478044989).

1110011221987 is an equidigital number, since it uses as much as digits as its factorization.

1110011221987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478044988.

The product of its (nonzero) digits is 2016, while the sum is 34.

The spelling of 1110011221987 in words is "one trillion, one hundred ten billion, eleven million, two hundred twenty-one thousand, nine hundred eighty-seven".