204120022 has 4 divisors (see below), whose sum is σ = 306180036. Its totient is φ = 102060010.

The previous prime is 204120019. The next prime is 204120023. The reversal of 204120022 is 220021402.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 204119984 and 204120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204120023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51030004 + ... + 51030007.

It is an arithmetic number, because the mean of its divisors is an integer number (76545009).

Almost surely, 2^204120022 is an apocalyptic number.

204120022 is a deficient number, since it is larger than the sum of its proper divisors (102060014).

204120022 is a wasteful number, since it uses less digits than its factorization.

204120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102060013.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 204120022 is about 14287.0578496764. The cubic root of 204120022 is about 588.7919569872.

Adding to 204120022 its reverse (220021402), we get a palindrome (424141424).

The spelling of 204120022 in words is "two hundred four million, one hundred twenty thousand, twenty-two".