200000021123 has 8 divisors (see below), whose sum is σ = 231464762880. Its totient is φ = 169258606920.

The previous prime is 200000021099. The next prime is 200000021167. The reversal of 200000021123 is 321120000002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200000021123 - 2²⁴ = 199983243907 is a prime.

It is a super-2 number, since 2×200000021123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200000021173) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 180831293 + ... + 180832398.

It is an arithmetic number, because the mean of its divisors is an integer number (28933095360).

Almost surely, 2^200000021123 is an apocalyptic number.

200000021123 is a deficient number, since it is larger than the sum of its proper divisors (31464741757).

200000021123 is an equidigital number, since it uses as much as digits as its factorization.

200000021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361663777.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 200000021123 its reverse (321120000002), we get a palindrome (521120021125).

The spelling of 200000021123 in words is "two hundred billion, twenty-one thousand, one hundred twenty-three".