212381210322 has 54 divisors (see below), whose sum is σ = 485737842213. Its totient is φ = 67056019344.

The previous prime is 212381210287. The next prime is 212381210323. The reversal of 212381210322 is 223012183212.

212381210322 is a `hidden beast` number, since 2 + 123 + 8 + 1 + 210 + 322 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 210909644001 + 1471566321 = 459249^2 + 38361^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=325869.

It is not an unprimeable number, because it can be changed into a prime (212381210323) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 37146208 + ... + 37151924.

Almost surely, 2^212381210322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212381210322

212381210322 is an abundant number, since it is smaller than the sum of its proper divisors (273356631891).

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

212381210322 is an frugal number, since it uses more digits than its factorization.

212381210322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11480 (or 5741 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 212381210322 its reverse (223012183212), we get a palindrome (435393393534).

The spelling of 212381210322 in words is "two hundred twelve billion, three hundred eighty-one million, two hundred ten thousand, three hundred twenty-two".