200021210953 has 2 divisors, whose sum is σ = 200021210954. Its totient is φ = 200021210952.

The previous prime is 200021210933. The next prime is 200021210959. The reversal of 200021210953 is 359012120002.

It is a happy number.

200021210953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151763226624 + 48257984329 = 389568^2 + 219677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200021210953 is a prime.

It is a super-2 number, since 2×200021210953² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200021210959) 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 as a sum of consecutive naturals, namely, 100010605476 + 100010605477.

It is an arithmetic number, because the mean of its divisors is an integer number (100010605477).

Almost surely, 2^200021210953 is an apocalyptic number.

It is an amenable number.

200021210953 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021210953 is an equidigital number, since it uses as much as digits as its factorization.

200021210953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 200021210953 its reverse (359012120002), we get a palindrome (559033330955).

The spelling of 200021210953 in words is "two hundred billion, twenty-one million, two hundred ten thousand, nine hundred fifty-three".