22202112322121 has 4 divisors (see below), whose sum is σ = 22566081376644. Its totient is φ = 21838143267600.

The previous prime is 22202112322087. The next prime is 22202112322127. The reversal of 22202112322121 is 12122321120222.

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 3827481396025 + 18374630926096 = 1956395^2 + 4286564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22202112322121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22202112322127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181984527170 + ... + 181984527291.

It is an arithmetic number, because the mean of its divisors is an integer number (5641520344161).

Almost surely, 2^{22202112322121} is an apocalyptic number.

It is an amenable number.

22202112322121 is a deficient number, since it is larger than the sum of its proper divisors (363969054523).

22202112322121 is an equidigital number, since it uses as much as digits as its factorization.

22202112322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363969054522.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 22202112322121 its reverse (12122321120222), we get a palindrome (34324433442343).

The spelling of 22202112322121 in words is "twenty-two trillion, two hundred two billion, one hundred twelve million, three hundred twenty-two thousand, one hundred twenty-one".