12221000122 has 4 divisors (see below), whose sum is σ = 18331500186. Its totient is φ = 6110500060.

The previous prime is 12221000111. The next prime is 12221000179. The reversal of 12221000122 is 22100012221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22100012221 = 7 ⋅3157144603.

It can be written as a sum of positive squares in only one way, i.e., 11767693441 + 453306681 = 108479^2 + 21291^2 .

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 as a sum of consecutive naturals, namely, 3055250029 + ... + 3055250032.

Almost surely, 2^12221000122 is an apocalyptic number.

12221000122 is a deficient number, since it is larger than the sum of its proper divisors (6110500064).

12221000122 is an equidigital number, since it uses as much as digits as its factorization.

12221000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110500063.

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

Adding to 12221000122 its reverse (22100012221), we get a palindrome (34321012343).

The spelling of 12221000122 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-two", and thus it is an aban number.