12000102221 has 8 divisors (see below), whose sum is σ = 12022937784. Its totient is φ = 11977288960.

The previous prime is 12000102211. The next prime is 12000102223. The reversal of 12000102221 is 12220100021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7219900900 + 4780201321 = 84970^2 + 69139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12000102221 - 2⁶ = 12000102157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000102223) 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, 1378001 + ... + 1386681.

It is an arithmetic number, because the mean of its divisors is an integer number (1502867223).

Almost surely, 2^12000102221 is an apocalyptic number.

It is an amenable number.

12000102221 is a deficient number, since it is larger than the sum of its proper divisors (22835563).

12000102221 is an equidigital number, since it uses as much as digits as its factorization.

12000102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11151.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12000102221 its reverse (12220100021), we get a palindrome (24220202242).

The spelling of 12000102221 in words is "twelve billion, one hundred two thousand, two hundred twenty-one".