22145142052 has 48 divisors (see below), whose sum is σ = 43774758720. Its totient is φ = 9710019200.

The previous prime is 22145142017. The next prime is 22145142059. The reversal of 22145142052 is 25024154122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22145142052.

It is not an unprimeable number, because it can be changed into a prime (22145142059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507302 + ... + 1521922.

It is an arithmetic number, because the mean of its divisors is an integer number (911974140).

Almost surely, 2^22145142052 is an apocalyptic number.

22145142052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22145142052 is a deficient number, since it is larger than the sum of its proper divisors (21629616668).

22145142052 is a wasteful number, since it uses less digits than its factorization.

22145142052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15852 (or 15850 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 22145142052 its reverse (25024154122), we get a palindrome (47169296174).

The spelling of 22145142052 in words is "twenty-two billion, one hundred forty-five million, one hundred forty-two thousand, fifty-two".