1110221111987 has 16 divisors (see below), whose sum is σ = 1224862611840. Its totient is φ = 999759936000.

The previous prime is 1110221111977. The next prime is 1110221112017. The reversal of 1110221111987 is 7891111220111.

It is a cyclic number.

It is not a de Polignac number, because 1110221111987 - 2¹⁴ = 1110221095603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110221111947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9583862 + ... + 9699012.

It is an arithmetic number, because the mean of its divisors is an integer number (76553913240).

Almost surely, 2^{1110221111987} is an apocalyptic number.

1110221111987 is a deficient number, since it is larger than the sum of its proper divisors (114641499853).

1110221111987 is a wasteful number, since it uses less digits than its factorization.

1110221111987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133294.

The product of its (nonzero) digits is 2016, while the sum is 35.

The spelling of 1110221111987 in words is "one trillion, one hundred ten billion, two hundred twenty-one million, one hundred eleven thousand, nine hundred eighty-seven".