212322300221 has 8 divisors (see below), whose sum is σ = 214520416320. Its totient is φ = 210124372608.

The previous prime is 212322300193. The next prime is 212322300227. The reversal of 212322300221 is 122003223212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212322300221 - 2²² = 212318105917 is a prime.

It is a super-2 number, since 2×212322300221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212322300193 and 212322300202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212322300227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4036130 + ... + 4088396.

It is an arithmetic number, because the mean of its divisors is an integer number (26815052040).

Almost surely, 2^212322300221 is an apocalyptic number.

It is an amenable number.

212322300221 is a deficient number, since it is larger than the sum of its proper divisors (2198116099).

212322300221 is an equidigital number, since it uses as much as digits as its factorization.

212322300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94243.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212322300221 its reverse (122003223212), we get a palindrome (334325523433).

The spelling of 212322300221 in words is "two hundred twelve billion, three hundred twenty-two million, three hundred thousand, two hundred twenty-one".