213200100221 has 4 divisors (see below), whose sum is σ = 213202262172. Its totient is φ = 213197938272.

The previous prime is 213200100101. The next prime is 213200100229. The reversal of 213200100221 is 122001002312.

It is a happy number.

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 98759976121 + 114440124100 = 314261^2 + 338290^2 .

It is a cyclic number.

It is not a de Polignac number, because 213200100221 - 2¹⁰ = 213200099197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213200100196 and 213200100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213200100229) 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, 925610 + ... + 1132763.

It is an arithmetic number, because the mean of its divisors is an integer number (53300565543).

Almost surely, 2^213200100221 is an apocalyptic number.

It is an amenable number.

213200100221 is a deficient number, since it is larger than the sum of its proper divisors (2161951).

213200100221 is a wasteful number, since it uses less digits than its factorization.

213200100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161950.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 213200100221 its reverse (122001002312), we get a palindrome (335201102533).

The spelling of 213200100221 in words is "two hundred thirteen billion, two hundred million, one hundred thousand, two hundred twenty-one".