12000010221 has 8 divisors (see below), whose sum is σ = 17777792960. Its totient is φ = 8000006796.

The previous prime is 12000010213. The next prime is 12000010223. The reversal of 12000010221 is 12201000021.

It is not a de Polignac number, because 12000010221 - 2³ = 12000010213 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000010223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222222385 + ... + 222222438.

It is an arithmetic number, because the mean of its divisors is an integer number (2222224120).

Almost surely, 2^12000010221 is an apocalyptic number.

It is an amenable number.

12000010221 is a deficient number, since it is larger than the sum of its proper divisors (5777782739).

12000010221 is an equidigital number, since it uses as much as digits as its factorization.

12000010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444444832 (or 444444826 counting only the distinct ones).

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

Adding to 12000010221 its reverse (12201000021), we get a palindrome (24201010242).

The spelling of 12000010221 in words is "twelve billion, ten thousand, two hundred twenty-one".