16221001100012 has 12 divisors (see below), whose sum is σ = 28396886450856. Its totient is φ = 8107604971200.

The previous prime is 16221001100009. The next prime is 16221001100041. The reversal of 16221001100012 is 21000110012261.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723882098 + ... + 723904505.

It is an arithmetic number, because the mean of its divisors is an integer number (2366407204238).

Almost surely, 2^{16221001100012} is an apocalyptic number.

It is an amenable number.

16221001100012 is a deficient number, since it is larger than the sum of its proper divisors (12175885350844).

16221001100012 is a wasteful number, since it uses less digits than its factorization.

16221001100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447789408 (or 1447789406 counting only the distinct ones).

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

Adding to 16221001100012 its reverse (21000110012261), we get a palindrome (37221111112273).

The spelling of 16221001100012 in words is "sixteen trillion, two hundred twenty-one billion, one million, one hundred thousand, twelve".