223425122353221 has 16 divisors (see below), whose sum is σ = 313584425336000. Its totient is φ = 141108215781888.

The previous prime is 223425122353219. The next prime is 223425122353243. The reversal of 223425122353221 is 122353221524322.

It is not a de Polignac number, because 223425122353221 - 2¹ = 223425122353219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 223425122353221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223425122353721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29762956 + ... + 36505941.

It is an arithmetic number, because the mean of its divisors is an integer number (19599026583500).

Almost surely, 2^{223425122353221} is an apocalyptic number.

It is an amenable number.

223425122353221 is a deficient number, since it is larger than the sum of its proper divisors (90159302982779).

223425122353221 is a wasteful number, since it uses less digits than its factorization.

223425122353221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66328068.

The product of its digits is 345600, while the sum is 39.

Adding to 223425122353221 its reverse (122353221524322), we get a palindrome (345778343877543).

The spelling of 223425122353221 in words is "two hundred twenty-three trillion, four hundred twenty-five billion, one hundred twenty-two million, three hundred fifty-three thousand, two hundred twenty-one".