200123122 has 4 divisors (see below), whose sum is σ = 300184686. Its totient is φ = 100061560.

The previous prime is 200123111. The next prime is 200123191. The reversal of 200123122 is 221321002.

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

It can be written as a sum of positive squares in only one way, i.e., 171060241 + 29062881 = 13079^2 + 5391^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50030779 + ... + 50030782.

Almost surely, 2^200123122 is an apocalyptic number.

200123122 is a deficient number, since it is larger than the sum of its proper divisors (100061564).

200123122 is a wasteful number, since it uses less digits than its factorization.

200123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100061563.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 200123122 is about 14146.4879740521. The cubic root of 200123122 is about 584.9235266632.

Adding to 200123122 its reverse (221321002), we get a palindrome (421444124).

The spelling of 200123122 in words is "two hundred million, one hundred twenty-three thousand, one hundred twenty-two".