22121200323001 has 4 divisors (see below), whose sum is σ = 23822831117092. Its totient is φ = 20419569528912.

The previous prime is 22121200322989. The next prime is 22121200323011. The reversal of 22121200323001 is 10032300212122.

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 10421927346601 + 11699272976400 = 3228301^2 + 3420420^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121200323001 - 2²⁹ = 22120663452089 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 22121200323001.

It is not an unprimeable number, because it can be changed into a prime (22121200323011) 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, 850815397026 + ... + 850815397051.

It is an arithmetic number, because the mean of its divisors is an integer number (5955707779273).

Almost surely, 2^{22121200323001} is an apocalyptic number.

It is an amenable number.

22121200323001 is a deficient number, since it is larger than the sum of its proper divisors (1701630794091).

22121200323001 is a wasteful number, since it uses less digits than its factorization.

22121200323001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701630794090.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22121200323001 its reverse (10032300212122), we get a palindrome (32153500535123).

The spelling of 22121200323001 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred million, three hundred twenty-three thousand, one".