21189498112 has 36 divisors (see below), whose sum is σ = 42315123060. Its totient is φ = 10590015488.

The previous prime is 21189498097. The next prime is 21189498119.

21189498112 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 148254976 + 21041243136 = 12176^2 + 145056^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21189498119) 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, 595314 + ... + 629902.

It is an arithmetic number, because the mean of its divisors is an integer number (1175420085).

Almost surely, 2^21189498112 is an apocalyptic number.

It is an amenable number.

21189498112 is a deficient number, since it is larger than the sum of its proper divisors (21125624948).

21189498112 is an equidigital number, since it uses as much as digits as its factorization.

21189498112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36998 (or 36984 counting only the distinct ones).

The product of its digits is 82944, while the sum is 46.

The spelling of 21189498112 in words is "twenty-one billion, one hundred eighty-nine million, four hundred ninety-eight thousand, one hundred twelve".