200013321312221 has 4 divisors (see below), whose sum is σ = 200013385873500. Its totient is φ = 200013256750944.

The previous prime is 200013321312191. The next prime is 200013321312239. The reversal of 200013321312221 is 122213123310002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101744542922500 + 98268778389721 = 10086850^2 + 9913061^2 .

It is a cyclic number.

It is not a de Polignac number, because 200013321312221 - 2⁶ = 200013321312157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200013321312241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27386216 + ... + 33912113.

It is an arithmetic number, because the mean of its divisors is an integer number (50003346468375).

Almost surely, 2^{200013321312221} is an apocalyptic number.

It is an amenable number.

200013321312221 is a deficient number, since it is larger than the sum of its proper divisors (64561279).

200013321312221 is an equidigital number, since it uses as much as digits as its factorization.

200013321312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64561278.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 200013321312221 its reverse (122213123310002), we get a palindrome (322226444622223).

The spelling of 200013321312221 in words is "two hundred trillion, thirteen billion, three hundred twenty-one million, three hundred twelve thousand, two hundred twenty-one".