213152221312 has 32 divisors (see below), whose sum is σ = 426088546380. Its totient is φ = 106212350976.

The previous prime is 213152221241. The next prime is 213152221319. The reversal of 213152221312 is 213122251312.

It can be written as a sum of positive squares in 2 ways, for example, as 212506248256 + 645973056 = 460984^2 + 25416^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (213152221319) 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, 2804223 + ... + 2879230.

Almost surely, 2^213152221312 is an apocalyptic number.

It is an amenable number.

213152221312 is a deficient number, since it is larger than the sum of its proper divisors (212936325068).

213152221312 is an equidigital number, since it uses as much as digits as its factorization.

213152221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683760 (or 5683748 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

Adding to 213152221312 its reverse (213122251312), we get a palindrome (426274472624).

The spelling of 213152221312 in words is "two hundred thirteen billion, one hundred fifty-two million, two hundred twenty-one thousand, three hundred twelve".