204222135115523 has 6 divisors (see below), whose sum is σ = 237564524522196. Its totient is φ = 175047544384692.

The previous prime is 204222135115511. The next prime is 204222135115561. The reversal of 204222135115523 is 325511531222402.

It is not a de Polignac number, because 204222135115523 - 2⁸ = 204222135115267 is a prime.

It is a super-2 number, since 2×204222135115523² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204222135135523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2083899337865 + ... + 2083899337962.

It is an arithmetic number, because the mean of its divisors is an integer number (39594087420366).

Almost surely, 2^{204222135115523} is an apocalyptic number.

204222135115523 is a deficient number, since it is larger than the sum of its proper divisors (33342389406673).

204222135115523 is an equidigital number, since it uses as much as digits as its factorization.

204222135115523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167798675841 (or 4167798675834 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 204222135115523 its reverse (325511531222402), we get a palindrome (529733666337925).

The spelling of 204222135115523 in words is "two hundred four trillion, two hundred twenty-two billion, one hundred thirty-five million, one hundred fifteen thousand, five hundred twenty-three".