22203123213121 has 8 divisors (see below), whose sum is σ = 22331598949800. Its totient is φ = 22074649016832.

The previous prime is 22203123213119. The next prime is 22203123213157. The reversal of 22203123213121 is 12131232130222.

It can be written as a sum of positive squares in 4 ways, for example, as 1534179504400 + 20668943708721 = 1238620^2 + 4546311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22203123213121 - 2¹ = 22203123213119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22203123213221) 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 7 ways as a sum of consecutive naturals, for example, 41944305 + ... + 42470353.

It is an arithmetic number, because the mean of its divisors is an integer number (2791449868725).

Almost surely, 2^{22203123213121} is an apocalyptic number.

It is an amenable number.

22203123213121 is a deficient number, since it is larger than the sum of its proper divisors (128475736679).

22203123213121 is a wasteful number, since it uses less digits than its factorization.

22203123213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770195.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 22203123213121 its reverse (12131232130222), we get a palindrome (34334355343343).

The spelling of 22203123213121 in words is "twenty-two trillion, two hundred three billion, one hundred twenty-three million, two hundred thirteen thousand, one hundred twenty-one".