22320012234 has 64 divisors (see below), whose sum is σ = 50630751360. Its totient is φ = 6502809600.

The previous prime is 22320012223. The next prime is 22320012257. The reversal of 22320012234 is 43221002322.

It is a super-3 number, since 3×22320012234³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22320012234.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4646634 + ... + 4651434.

It is an arithmetic number, because the mean of its divisors is an integer number (791105490).

Almost surely, 2^22320012234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22320012234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25315375680).

22320012234 is an abundant number, since it is smaller than the sum of its proper divisors (28310739126).

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

22320012234 is a wasteful number, since it uses less digits than its factorization.

22320012234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22320012234 its reverse (43221002322), we get a palindrome (65541014556).

The spelling of 22320012234 in words is "twenty-two billion, three hundred twenty million, twelve thousand, two hundred thirty-four".