1121219984 has 20 divisors (see below), whose sum is σ = 2183397084. Its totient is φ = 557762688.

The previous prime is 1121219977. The next prime is 1121219987. The reversal of 1121219984 is 4899121211.

It can be written as a sum of positive squares in 2 ways, for example, as 1047946384 + 73273600 = 32372^2 + 8560^2 .

It is not an unprimeable number, because it can be changed into a prime (1121219987) 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 in 3 ways as a sum of consecutive naturals, for example, 174707 + ... + 181010.

Almost surely, 2^1121219984 is an apocalyptic number.

It is an amenable number.

1121219984 is a deficient number, since it is larger than the sum of its proper divisors (1062177100).

1121219984 is a wasteful number, since it uses less digits than its factorization.

1121219984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355922 (or 355916 counting only the distinct ones).

The product of its digits is 10368, while the sum is 38.

The square root of 1121219984 is about 33484.6230977743. The cubic root of 1121219984 is about 1038.8757525740.

The spelling of 1121219984 in words is "one billion, one hundred twenty-one million, two hundred nineteen thousand, nine hundred eighty-four".