22221024210 has 288 divisors, whose sum is σ = 77179003200. Its totient is φ = 4374155520.

The previous prime is 22221024167. The next prime is 22221024239. The reversal of 22221024210 is 1242012222.

22221024210 is a `hidden beast` number, since 22 + 221 + 0 + 2 + 421 + 0 = 666.

It is a super-2 number, since 2×22221024210² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 909636 + ... + 933744.

It is an arithmetic number, because the mean of its divisors is an integer number (267982650).

Almost surely, 2^22221024210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221024210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38589501600).

22221024210 is an abundant number, since it is smaller than the sum of its proper divisors (54957978990).

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

22221024210 is a wasteful number, since it uses less digits than its factorization.

22221024210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24166 (or 24156 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22221024210 its reverse (1242012222), we get a palindrome (23463036432).

The spelling of 22221024210 in words is "twenty-two billion, two hundred twenty-one million, twenty-four thousand, two hundred ten".