22541031220 has 24 divisors (see below), whose sum is σ = 48615522984. Its totient is φ = 8772725376.

The previous prime is 22541031203. The next prime is 22541031229. The reversal of 22541031220 is 2213014522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6278660644 + 16262370576 = 79238^2 + 127524^2 .

It is a super-2 number, since 2×22541031220² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22541031191 and 22541031200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22541031229) 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, 15229687 + ... + 15231166.

It is an arithmetic number, because the mean of its divisors is an integer number (2025646791).

Almost surely, 2^22541031220 is an apocalyptic number.

22541031220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22541031220 is an abundant number, since it is smaller than the sum of its proper divisors (26074491764).

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

22541031220 is a wasteful number, since it uses less digits than its factorization.

22541031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30460899 (or 30460897 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 22541031220 its reverse (2213014522), we get a palindrome (24754045742).

The spelling of 22541031220 in words is "twenty-two billion, five hundred forty-one million, thirty-one thousand, two hundred twenty".