1111112001982 has 4 divisors (see below), whose sum is σ = 1666668002976. Its totient is φ = 555556000990.

The previous prime is 1111112001947. The next prime is 1111112002001. The reversal of 1111112001982 is 2891002111111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1111112001982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277778000494 + ... + 277778000497.

It is an arithmetic number, because the mean of its divisors is an integer number (416667000744).

Almost surely, 2^{1111112001982} is an apocalyptic number.

1111112001982 is a deficient number, since it is larger than the sum of its proper divisors (555556000994).

1111112001982 is an equidigital number, since it uses as much as digits as its factorization.

1111112001982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555556000993.

The product of its (nonzero) digits is 288, while the sum is 28.

The spelling of 1111112001982 in words is "one trillion, one hundred eleven billion, one hundred twelve million, one thousand, nine hundred eighty-two".