204122122443 has 20 divisors (see below), whose sum is σ = 304935324408. Its totient is φ = 136075991040.

The previous prime is 204122122439. The next prime is 204122122459. The reversal of 204122122443 is 344221221402.

It is a happy number.

204122122443 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 2 + 212 + 2 + 443 = 666.

It is not a de Polignac number, because 204122122443 - 2² = 204122122439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204122124443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3921355 + ... + 3973067.

Almost surely, 2^204122122443 is an apocalyptic number.

204122122443 is a deficient number, since it is larger than the sum of its proper divisors (100813201965).

204122122443 is an equidigital number, since it uses as much as digits as its factorization.

204122122443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100456 (or 100447 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 204122122443 its reverse (344221221402), we get a palindrome (548343343845).

The spelling of 204122122443 in words is "two hundred four billion, one hundred twenty-two million, one hundred twenty-two thousand, four hundred forty-three".