22241225820 has 48 divisors (see below), whose sum is σ = 67936837248. Its totient is φ = 5391812160.

The previous prime is 22241225813. The next prime is 22241225821. The reversal of 22241225820 is 2852214222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22241225821) 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, 16848754 + ... + 16850073.

It is an arithmetic number, because the mean of its divisors is an integer number (1415350776).

Almost surely, 2^22241225820 is an apocalyptic number.

22241225820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22241225820 is an abundant number, since it is smaller than the sum of its proper divisors (45695611428).

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

22241225820 is a wasteful number, since it uses less digits than its factorization.

22241225820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33698850 (or 33698848 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The spelling of 22241225820 in words is "twenty-two billion, two hundred forty-one million, two hundred twenty-five thousand, eight hundred twenty".