212221320310 has 32 divisors (see below), whose sum is σ = 385619176800. Its totient is φ = 84084376320.

The previous prime is 212221320307. The next prime is 212221320319. The reversal of 212221320310 is 13023122212.

It is a super-2 number, since 2×212221320310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221320319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3819025 + ... + 3874195.

It is an arithmetic number, because the mean of its divisors is an integer number (12050599275).

Almost surely, 2^212221320310 is an apocalyptic number.

212221320310 is a deficient number, since it is larger than the sum of its proper divisors (173397856490).

212221320310 is a wasteful number, since it uses less digits than its factorization.

212221320310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58816.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212221320310 its reverse (13023122212), we get a palindrome (225244442522).

The spelling of 212221320310 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty thousand, three hundred ten".