200120221021 has 24 divisors (see below), whose sum is σ = 237468291840. Its totient is φ = 165128834880.

The previous prime is 200120220947. The next prime is 200120221061. The reversal of 200120221021 is 120122021002.

It is a happy number.

200120221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 200120221021 - 2²³ = 200111832413 is a prime.

It is a super-2 number, since 2×200120221021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200120220992 and 200120221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1142475 + ... + 1305943.

It is an arithmetic number, because the mean of its divisors is an integer number (9894512160).

Almost surely, 2^200120221021 is an apocalyptic number.

It is an amenable number.

200120221021 is a deficient number, since it is larger than the sum of its proper divisors (37348070819).

200120221021 is an equidigital number, since it uses as much as digits as its factorization.

200120221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163645 (or 163584 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200120221021 its reverse (120122021002), we get a palindrome (320242242023).

The spelling of 200120221021 in words is "two hundred billion, one hundred twenty million, two hundred twenty-one thousand, twenty-one".