12122201221002 has 24 divisors (see below), whose sum is σ = 26265213848484. Its totient is φ = 4040665350144.

The previous prime is 12122201220971. The next prime is 12122201221021. The reversal of 12122201221002 is 20012210222121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12088840563801 + 33360657201 = 3476901^2 + 182649^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4600413 + ... + 6738560.

Almost surely, 2^{12122201221002} is an apocalyptic number.

12122201221002 is an abundant number, since it is smaller than the sum of its proper divisors (14143012627482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12122201221002 is a wasteful number, since it uses less digits than its factorization.

12122201221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398374 (or 11398371 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12122201221002 its reverse (20012210222121), we get a palindrome (32134411443123).

The spelling of 12122201221002 in words is "twelve trillion, one hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, two".