22120230 has 64 divisors (see below), whose sum is σ = 61337088. Its totient is φ = 5045760.

The previous prime is 22120229. The next prime is 22120249. The reversal of 22120230 is 3202122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3639 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (958392).

Almost surely, 2^22120230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22120230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30668544).

22120230 is an abundant number, since it is smaller than the sum of its proper divisors (39216858).

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

22120230 is a wasteful number, since it uses less digits than its factorization.

22120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22120230 is about 4703.2148579456. The cubic root of 22120230 is about 280.7134441950.

Adding to 22120230 its reverse (3202122), we get a palindrome (25322352).

The spelling of 22120230 in words is "twenty-two million, one hundred twenty thousand, two hundred thirty".