212221033310 has 64 divisors (see below), whose sum is σ = 450067665600. Its totient is φ = 71030753280.

The previous prime is 212221033261. The next prime is 212221033319. The reversal of 212221033310 is 13330122212.

It is a super-2 number, since 2×212221033310² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221033319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286454 + ... + 711686.

It is an arithmetic number, because the mean of its divisors is an integer number (7032307275).

Almost surely, 2^212221033310 is an apocalyptic number.

212221033310 is an abundant number, since it is smaller than the sum of its proper divisors (237846632290).

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

212221033310 is a wasteful number, since it uses less digits than its factorization.

212221033310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425613.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212221033310 its reverse (13330122212), we get a palindrome (225551155522).

The spelling of 212221033310 in words is "two hundred twelve billion, two hundred twenty-one million, thirty-three thousand, three hundred ten".