20001182112 has 36 divisors (see below), whose sum is σ = 56878362450. Its totient is φ = 6667060608.

The previous prime is 20001182107. The next prime is 20001182119. The reversal of 20001182112 is 21128110002.

It can be written as a sum of positive squares in only one way, i.e., 13810010256 + 6191171856 = 117516^2 + 78684^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20001182119) 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 5 ways as a sum of consecutive naturals, for example, 34723987 + ... + 34724562.

Almost surely, 2^20001182112 is an apocalyptic number.

It is an amenable number.

20001182112 is an abundant number, since it is smaller than the sum of its proper divisors (36877180338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001182112 is a wasteful number, since it uses less digits than its factorization.

20001182112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69448565 (or 69448554 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20001182112 its reverse (21128110002), we get a palindrome (41129292114).

The spelling of 20001182112 in words is "twenty billion, one million, one hundred eighty-two thousand, one hundred twelve".