213220300032 has 54 divisors (see below), whose sum is σ = 614766696362. Its totient is φ = 71073432576.

The previous prime is 213220299947. The next prime is 213220300093. The reversal of 213220300032 is 230003022312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 154996540416 + 58223759616 = 393696^2 + 241296^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 213220299978 and 213220300014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46269463 + ... + 46274070.

Almost surely, 2^213220300032 is an apocalyptic number.

It is an amenable number.

213220300032 is an abundant number, since it is smaller than the sum of its proper divisors (401546396330).

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

213220300032 is an equidigital number, since it uses as much as digits as its factorization.

213220300032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92543555 (or 92543538 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 213220300032 its reverse (230003022312), we get a palindrome (443223322344).

The spelling of 213220300032 in words is "two hundred thirteen billion, two hundred twenty million, three hundred thousand, thirty-two".