11011221982 has 8 divisors (see below), whose sum is σ = 16517281752. Its totient is φ = 5505461400.

The previous prime is 11011221973. The next prime is 11011221983. The reversal of 11011221982 is 28912211011.

11011221982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11011221982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011221983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88632 + ... + 172852.

It is an arithmetic number, because the mean of its divisors is an integer number (2064660219).

Almost surely, 2^11011221982 is an apocalyptic number.

11011221982 is a deficient number, since it is larger than the sum of its proper divisors (5506059770).

11011221982 is an equidigital number, since it uses as much as digits as its factorization.

11011221982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149594.

The product of its (nonzero) digits is 576, while the sum is 28.

Adding to 11011221982 its reverse (28912211011), we get a palindrome (39923432993).

The spelling of 11011221982 in words is "eleven billion, eleven million, two hundred twenty-one thousand, nine hundred eighty-two".