200120210021 has 8 divisors (see below), whose sum is σ = 201669518688. Its totient is φ = 198571230000.

The previous prime is 200120210011. The next prime is 200120210033. The reversal of 200120210021 is 120012021002.

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 200120210021 - 2⁶ = 200120209957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200120209984 and 200120210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120210011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219886 + ... + 1374176.

It is an arithmetic number, because the mean of its divisors is an integer number (25208689836).

Almost surely, 2^200120210021 is an apocalyptic number.

It is an amenable number.

200120210021 is a deficient number, since it is larger than the sum of its proper divisors (1549308667).

200120210021 is a wasteful number, since it uses less digits than its factorization.

200120210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164323.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200120210021 its reverse (120012021002), we get a palindrome (320132231023).

The spelling of 200120210021 in words is "two hundred billion, one hundred twenty million, two hundred ten thousand, twenty-one".