22003212544 has 18 divisors (see below), whose sum is σ = 43920475550. Its totient is φ = 11001606144.

The previous prime is 22003212533. The next prime is 22003212547. The reversal of 22003212544 is 44521230022.

It can be written as a sum of positive squares in only one way, i.e., 18902950144 + 3100262400 = 137488^2 + 55680^2 .

It is not an unprimeable number, because it can be changed into a prime (22003212547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42974769 + ... + 42975280.

Almost surely, 2^22003212544 is an apocalyptic number.

It is an amenable number.

22003212544 is a deficient number, since it is larger than the sum of its proper divisors (21917263006).

22003212544 is an frugal number, since it uses more digits than its factorization.

22003212544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85950065 (or 85950051 counting only the distinct ones).

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

Adding to 22003212544 its reverse (44521230022), we get a palindrome (66524442566).

The spelling of 22003212544 in words is "twenty-two billion, three million, two hundred twelve thousand, five hundred forty-four".