11121001984 has 20 divisors (see below), whose sum is σ = 22220284284. Its totient is φ = 5560500736.

The previous prime is 11121001951. The next prime is 11121001987. The reversal of 11121001984 is 48910012111.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121001987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10859842 + ... + 10860865.

Almost surely, 2^11121001984 is an apocalyptic number.

It is an amenable number.

11121001984 is a deficient number, since it is larger than the sum of its proper divisors (11099282300).

11121001984 is an frugal number, since it uses more digits than its factorization.

11121001984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21720725 (or 21720709 counting only the distinct ones).

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

The spelling of 11121001984 in words is "eleven billion, one hundred twenty-one million, one thousand, nine hundred eighty-four".