212032303221 has 4 divisors (see below), whose sum is σ = 282709737632. Its totient is φ = 141354868812.

The previous prime is 212032303183. The next prime is 212032303243. The reversal of 212032303221 is 122303230212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212032303221 - 2⁹ = 212032302709 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 (212032303291) 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, 35338717201 + ... + 35338717206.

It is an arithmetic number, because the mean of its divisors is an integer number (70677434408).

Almost surely, 2^212032303221 is an apocalyptic number.

It is an amenable number.

212032303221 is a deficient number, since it is larger than the sum of its proper divisors (70677434411).

212032303221 is an equidigital number, since it uses as much as digits as its factorization.

212032303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70677434410.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212032303221 its reverse (122303230212), we get a palindrome (334335533433).

The spelling of 212032303221 in words is "two hundred twelve billion, thirty-two million, three hundred three thousand, two hundred twenty-one".