12222010210121 has 4 divisors (see below), whose sum is σ = 12240500392644. Its totient is φ = 12203520027600.

The previous prime is 12222010210099. The next prime is 12222010210147. The reversal of 12222010210121 is 12101201022221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11369278010896 + 852732199225 = 3371836^2 + 923435^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222010210121 - 2⁴² = 7823963699017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12222010210121.

It is not an unprimeable number, because it can be changed into a prime (12222010200121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9245090270 + ... + 9245091591.

It is an arithmetic number, because the mean of its divisors is an integer number (3060125098161).

Almost surely, 2^{12222010210121} is an apocalyptic number.

It is an amenable number.

12222010210121 is a deficient number, since it is larger than the sum of its proper divisors (18490182523).

12222010210121 is an equidigital number, since it uses as much as digits as its factorization.

12222010210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18490182522.

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

Adding to 12222010210121 its reverse (12101201022221), we get a palindrome (24323211232342).

The spelling of 12222010210121 in words is "twelve trillion, two hundred twenty-two billion, ten million, two hundred ten thousand, one hundred twenty-one".