22105234420 has 24 divisors (see below), whose sum is σ = 46654272000. Its totient is φ = 8797659552.

The previous prime is 22105234397. The next prime is 22105234421. The reversal of 22105234420 is 2443250122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22105234421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2773060 + ... + 2781019.

It is an arithmetic number, because the mean of its divisors is an integer number (1943928000).

Almost surely, 2^22105234420 is an apocalyptic number.

22105234420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22105234420 is an abundant number, since it is smaller than the sum of its proper divisors (24549037580).

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

22105234420 is a wasteful number, since it uses less digits than its factorization.

22105234420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554287 (or 5554285 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 22105234420 its reverse (2443250122), we get a palindrome (24548484542).

The spelling of 22105234420 in words is "twenty-two billion, one hundred five million, two hundred thirty-four thousand, four hundred twenty".