12021001222 has 4 divisors (see below), whose sum is σ = 18031501836. Its totient is φ = 6010500610.

The previous prime is 12021001217. The next prime is 12021001229. The reversal of 12021001222 is 22210012021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021001229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005250304 + ... + 3005250307.

It is an arithmetic number, because the mean of its divisors is an integer number (4507875459).

Almost surely, 2^12021001222 is an apocalyptic number.

12021001222 is a deficient number, since it is larger than the sum of its proper divisors (6010500614).

12021001222 is an equidigital number, since it uses as much as digits as its factorization.

12021001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010500613.

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

Adding to 12021001222 its reverse (22210012021), we get a palindrome (34231013243).

The spelling of 12021001222 in words is "twelve billion, twenty-one million, one thousand, two hundred twenty-two".