12221122022 has 8 divisors (see below), whose sum is σ = 18552546936. Its totient is φ = 6036939712.

The previous prime is 12221121947. The next prime is 12221122037. The reversal of 12221122022 is 22022112221.

It is a happy number.

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

It is a super-2 number, since 2×12221122022² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36810443 + ... + 36810774.

It is an arithmetic number, because the mean of its divisors is an integer number (2319068367).

Almost surely, 2^12221122022 is an apocalyptic number.

12221122022 is a deficient number, since it is larger than the sum of its proper divisors (6331424914).

12221122022 is an equidigital number, since it uses as much as digits as its factorization.

12221122022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73621302.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221122022 its reverse (22022112221), we get a palindrome (34243234243).

The spelling of 12221122022 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-two".