16321105012 has 12 divisors (see below), whose sum is σ = 29258566596. Its totient is φ = 7961514560.

The previous prime is 16321104979. The next prime is 16321105019. The reversal of 16321105012 is 21050112361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3820970596 + 12500134416 = 61814^2 + 111804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16321105019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49759303 + ... + 49759630.

It is an arithmetic number, because the mean of its divisors is an integer number (2438213883).

Almost surely, 2^16321105012 is an apocalyptic number.

It is an amenable number.

16321105012 is a deficient number, since it is larger than the sum of its proper divisors (12937461584).

16321105012 is a wasteful number, since it uses less digits than its factorization.

16321105012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99518978 (or 99518976 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 16321105012 its reverse (21050112361), we get a palindrome (37371217373).

The spelling of 16321105012 in words is "sixteen billion, three hundred twenty-one million, one hundred five thousand, twelve".