12212002321 has 8 divisors (see below), whose sum is σ = 12330335304. Its totient is φ = 12093849600.

The previous prime is 12212002289. The next prime is 12212002331. The reversal of 12212002321 is 12320021221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1554330625 + 10657671696 = 39425^2 + 103236^2 .

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 12212002321 - 2⁵ = 12212002289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212002295 and 12212002304.

It is not an unprimeable number, because it can be changed into a prime (12212002331) 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, 93121 + ... + 181921.

It is an arithmetic number, because the mean of its divisors is an integer number (1541291913).

Almost surely, 2^12212002321 is an apocalyptic number.

It is an amenable number.

12212002321 is a deficient number, since it is larger than the sum of its proper divisors (118332983).

12212002321 is a wasteful number, since it uses less digits than its factorization.

12212002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90131.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12212002321 its reverse (12320021221), we get a palindrome (24532023542).

The spelling of 12212002321 in words is "twelve billion, two hundred twelve million, two thousand, three hundred twenty-one".