12022010221 has 8 divisors (see below), whose sum is σ = 12969226424. Its totient is φ = 11078000640.

The previous prime is 12022010213. The next prime is 12022010227. The reversal of 12022010221 is 12201022021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5397840900 + 6624169321 = 73470^2 + 81389^2 .

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 12022010221 - 2³ = 12022010213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022010227) 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, 793860 + ... + 808861.

It is an arithmetic number, because the mean of its divisors is an integer number (1621153303).

Almost surely, 2^12022010221 is an apocalyptic number.

It is an amenable number.

12022010221 is a deficient number, since it is larger than the sum of its proper divisors (947216203).

12022010221 is a wasteful number, since it uses less digits than its factorization.

12022010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603311.

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

Adding to 12022010221 its reverse (12201022021), we get a palindrome (24223032242).

The spelling of 12022010221 in words is "twelve billion, twenty-two million, ten thousand, two hundred twenty-one".