204203422122 has 80 divisors (see below), whose sum is σ = 476723567232. Its totient is φ = 58309890240.

The previous prime is 204203422103. The next prime is 204203422123. The reversal of 204203422122 is 221224302402.

It is a junction number, because it is equal to n+sod(n) for n = 204203422092 and 204203422101.

It is not an unprimeable number, because it can be changed into a prime (204203422123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35162143 + ... + 35167949.

Almost surely, 2^204203422122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204203422122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238361783616).

204203422122 is an abundant number, since it is smaller than the sum of its proper divisors (272520145110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204203422122 is an equidigital number, since it uses as much as digits as its factorization.

204203422122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281 (or 8260 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 204203422122 its reverse (221224302402), we get a palindrome (425427724524).

The spelling of 204203422122 in words is "two hundred four billion, two hundred three million, four hundred twenty-two thousand, one hundred twenty-two".