12122201002121 has 24 divisors (see below), whose sum is σ = 14633493598080. Its totient is φ = 9835500888576.

The previous prime is 12122201002097. The next prime is 12122201002123. The reversal of 12122201002121 is 12120010222121.

It is not a de Polignac number, because 12122201002121 - 2¹⁸ = 12122200739977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12122201002121.

It is not an unprimeable number, because it can be changed into a prime (12122201002123) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1104500 + ... + 5046218.

It is an arithmetic number, because the mean of its divisors is an integer number (609728899920).

Almost surely, 2^{12122201002121} is an apocalyptic number.

It is an amenable number.

12122201002121 is a deficient number, since it is larger than the sum of its proper divisors (2511292595959).

12122201002121 is a wasteful number, since it uses less digits than its factorization.

12122201002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942981 (or 3942962 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12122201002121 its reverse (12120010222121), we get a palindrome (24242211224242).

The spelling of 12122201002121 in words is "twelve trillion, one hundred twenty-two billion, two hundred one million, two thousand, one hundred twenty-one".