12221022122 has 8 divisors (see below), whose sum is σ = 18333414372. Its totient is φ = 6109884000.

The previous prime is 12221022103. The next prime is 12221022179. The reversal of 12221022122 is 22122012221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12099780001 + 121242121 = 109999^2 + 11011^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12221022122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288779 + ... + 328382.

Almost surely, 2^12221022122 is an apocalyptic number.

12221022122 is a deficient number, since it is larger than the sum of its proper divisors (6112392250).

12221022122 is an equidigital number, since it uses as much as digits as its factorization.

12221022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627064.

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

Adding to 12221022122 its reverse (22122012221), we get a palindrome (34343034343).

Subtracting 12221022122 from its reverse (22122012221), we obtain a palindrome (9900990099).

The spelling of 12221022122 in words is "twelve billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-two".