22105405452 has 24 divisors (see below), whose sum is σ = 55546916656. Its totient is φ = 6801663168.

The previous prime is 22105405447. The next prime is 22105405453. The reversal of 22105405452 is 25450450122.

It is a super-2 number, since 2×22105405452² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22105405453) 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, 70850503 + ... + 70850814.

Almost surely, 2^22105405452 is an apocalyptic number.

It is an amenable number.

22105405452 is an abundant number, since it is smaller than the sum of its proper divisors (33441511204).

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

22105405452 is a wasteful number, since it uses less digits than its factorization.

22105405452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141701337 (or 141701335 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 22105405452 its reverse (25450450122), we get a palindrome (47555855574).

The spelling of 22105405452 in words is "twenty-two billion, one hundred five million, four hundred five thousand, four hundred fifty-two".