212323200313221 has 20 divisors (see below), whose sum is σ = 317178955881612. Its totient is φ = 141546661429248.

The previous prime is 212323200313193. The next prime is 212323200313229. The reversal of 212323200313221 is 122313002323212.

212323200313221 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 2 + 320 + 0 + 313 + 2 + 21 = 666.

212323200313221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 137630203928100 + 74692996385121 = 11731590^2 + 8642511^2 .

It is not a de Polignac number, because 212323200313221 - 2¹⁵ = 212323200280453 is a prime.

It is a super-2 number, since 2×212323200313221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323200313229) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14400636 + ... + 25140101.

Almost surely, 2^{212323200313221} is an apocalyptic number.

It is an amenable number.

212323200313221 is a deficient number, since it is larger than the sum of its proper divisors (104855755568391).

212323200313221 is an equidigital number, since it uses as much as digits as its factorization.

212323200313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39607042 (or 39607033 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 212323200313221 its reverse (122313002323212), we get a palindrome (334636202636433).

The spelling of 212323200313221 in words is "two hundred twelve trillion, three hundred twenty-three billion, two hundred million, three hundred thirteen thousand, two hundred twenty-one".