11121021982 has 32 divisors (see below), whose sum is σ = 19504074240. Its totient is φ = 4657256160.

The previous prime is 11121021973. The next prime is 11121022009. The reversal of 11121021982 is 28912012111.

It is a self number, because there is not a number n which added to its sum of digits gives 11121021982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97632 + ... + 178252.

It is an arithmetic number, because the mean of its divisors is an integer number (609502320).

Almost surely, 2^11121021982 is an apocalyptic number.

11121021982 is a deficient number, since it is larger than the sum of its proper divisors (8383052258).

11121021982 is a wasteful number, since it uses less digits than its factorization.

11121021982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80856.

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

The spelling of 11121021982 in words is "eleven billion, one hundred twenty-one million, twenty-one thousand, nine hundred eighty-two".