212221210110 has 64 divisors (see below), whose sum is σ = 626868813312. Its totient is φ = 44776342656.

The previous prime is 212221210043. The next prime is 212221210129. The reversal of 212221210110 is 11012122212.

212221210110 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212221210110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38865624 + ... + 38871083.

It is an arithmetic number, because the mean of its divisors is an integer number (9794825208).

Almost surely, 2^212221210110 is an apocalyptic number.

212221210110 is an abundant number, since it is smaller than the sum of its proper divisors (414647603202).

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

212221210110 is a wasteful number, since it uses less digits than its factorization.

212221210110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77736737.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212221210110 its reverse (11012122212), we get a palindrome (223233332322).

The spelling of 212221210110 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred ten thousand, one hundred ten".