12002210221 has 4 divisors (see below), whose sum is σ = 12524045472. Its totient is φ = 11480374972.

The previous prime is 12002210197. The next prime is 12002210293. The reversal of 12002210221 is 12201220021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12201220021 = 23 ⋅530487827.

It is a cyclic number.

It is not a de Polignac number, because 12002210221 - 2⁵ = 12002210189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002210921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260917591 + ... + 260917636.

It is an arithmetic number, because the mean of its divisors is an integer number (3131011368).

Almost surely, 2^12002210221 is an apocalyptic number.

It is an amenable number.

12002210221 is a deficient number, since it is larger than the sum of its proper divisors (521835251).

12002210221 is an equidigital number, since it uses as much as digits as its factorization.

12002210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521835250.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12002210221 its reverse (12201220021), we get a palindrome (24203430242).

The spelling of 12002210221 in words is "twelve billion, two million, two hundred ten thousand, two hundred twenty-one".