22121032230 has 512 divisors, whose sum is σ = 72917729280. Its totient is φ = 4704860160.

The previous prime is 22121032223. The next prime is 22121032249. The reversal of 22121032230 is 3223012122.

22121032230 is a `hidden beast` number, since 221 + 210 + 3 + 2 + 230 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 49934389 + ... + 49934831.

It is an arithmetic number, because the mean of its divisors is an integer number (142417440).

Almost surely, 2^22121032230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121032230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36458864640).

22121032230 is an abundant number, since it is smaller than the sum of its proper divisors (50796697050).

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

22121032230 is a wasteful number, since it uses less digits than its factorization.

22121032230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 547 counting only the distinct ones).

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

Adding to 22121032230 its reverse (3223012122), we get a palindrome (25344044352).

The spelling of 22121032230 in words is "twenty-two billion, one hundred twenty-one million, thirty-two thousand, two hundred thirty".