213201221202 has 80 divisors (see below), whose sum is σ = 512760014712. Its totient is φ = 65970339840.

The previous prime is 213201221201. The next prime is 213201221213. The reversal of 213201221202 is 202122102312.

213201221202 is a `hidden beast` number, since 21 + 320 + 122 + 1 + 202 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 211334203521 + 1867017681 = 459711^2 + 43209^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (213201221201) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 329199 + ... + 731282.

Almost surely, 2^213201221202 is an apocalyptic number.

213201221202 is an abundant number, since it is smaller than the sum of its proper divisors (299558793510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213201221202 is a wasteful number, since it uses less digits than its factorization.

213201221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060585 (or 1060576 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 213201221202 its reverse (202122102312), we get a palindrome (415323323514).

The spelling of 213201221202 in words is "two hundred thirteen billion, two hundred one million, two hundred twenty-one thousand, two hundred two".