200020443123 has 32 divisors (see below), whose sum is σ = 288883252224. Its totient is φ = 122622628352.

The previous prime is 200020443083. The next prime is 200020443137. The reversal of 200020443123 is 321344020002.

It is a cyclic number.

It is not a de Polignac number, because 200020443123 - 2¹³ = 200020434931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200020443123.

It is not an unprimeable number, because it can be changed into a prime (200020443143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1335961 + ... + 1478117.

It is an arithmetic number, because the mean of its divisors is an integer number (9027601632).

Almost surely, 2^200020443123 is an apocalyptic number.

200020443123 is a deficient number, since it is larger than the sum of its proper divisors (88862809101).

200020443123 is a wasteful number, since it uses less digits than its factorization.

200020443123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142811.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 200020443123 its reverse (321344020002), we get a palindrome (521364463125).

The spelling of 200020443123 in words is "two hundred billion, twenty million, four hundred forty-three thousand, one hundred twenty-three".