12000010000221 has 32 divisors (see below), whose sum is σ = 18555813504000. Its totient is φ = 7650087510384.

The previous prime is 12000010000109. The next prime is 12000010000249. The reversal of 12000010000221 is 12200001000021.

It is not a de Polignac number, because 12000010000221 - 2⁷ = 12000010000093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000010000261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368331 + ... + 4912808.

It is an arithmetic number, because the mean of its divisors is an integer number (579869172000).

Almost surely, 2^{12000010000221} is an apocalyptic number.

It is an amenable number.

12000010000221 is a deficient number, since it is larger than the sum of its proper divisors (6555803503779).

12000010000221 is a wasteful number, since it uses less digits than its factorization.

12000010000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284830 (or 5284824 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12000010000221 its reverse (12200001000021), we get a palindrome (24200011000242).

The spelling of 12000010000221 in words is "twelve trillion, ten million, two hundred twenty-one", and thus it is an aban number.