212221110244 has 48 divisors (see below), whose sum is σ = 436717403136. Its totient is φ = 88961644800.

The previous prime is 212221110217. The next prime is 212221110253. The reversal of 212221110244 is 442011122212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451104 + ... + 792424.

It is an arithmetic number, because the mean of its divisors is an integer number (9098279232).

Almost surely, 2^212221110244 is an apocalyptic number.

It is an amenable number.

212221110244 is an abundant number, since it is smaller than the sum of its proper divisors (224496292892).

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

212221110244 is a wasteful number, since it uses less digits than its factorization.

212221110244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342436 (or 342434 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212221110244 its reverse (442011122212), we get a palindrome (654232232456).

The spelling of 212221110244 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, two hundred forty-four".