22021233210 has 128 divisors (see below), whose sum is σ = 59382581760. Its totient is φ = 5806660608.

The previous prime is 22021233193. The next prime is 22021233211. The reversal of 22021233210 is 1233212022.

22021233210 is a `hidden beast` number, since 220 + 2 + 1 + 233 + 210 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (22021233211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25109292 + ... + 25110168.

It is an arithmetic number, because the mean of its divisors is an integer number (463926420).

Almost surely, 2^22021233210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021233210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29691290880).

22021233210 is an abundant number, since it is smaller than the sum of its proper divisors (37361348550).

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

22021233210 is a wasteful number, since it uses less digits than its factorization.

22021233210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22021233210 its reverse (1233212022), we get a palindrome (23254445232).

The spelling of 22021233210 in words is "twenty-two billion, twenty-one million, two hundred thirty-three thousand, two hundred ten".