16221110012 has 12 divisors (see below), whose sum is σ = 28868077560. Its totient is φ = 7973087856.

The previous prime is 16221110011. The next prime is 16221110021. The reversal of 16221110012 is 21001112261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221110011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34366523 + ... + 34366994.

It is an arithmetic number, because the mean of its divisors is an integer number (2405673130).

Almost surely, 2^16221110012 is an apocalyptic number.

It is an amenable number.

16221110012 is a deficient number, since it is larger than the sum of its proper divisors (12646967548).

16221110012 is a wasteful number, since it uses less digits than its factorization.

16221110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68733580 (or 68733578 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 16221110012 its reverse (21001112261), we get a palindrome (37222222273).

The spelling of 16221110012 in words is "sixteen billion, two hundred twenty-one million, one hundred ten thousand, twelve".