22003213543 has 6 divisors (see below), whose sum is σ = 23373656216. Its totient is φ = 20708906592.

The previous prime is 22003213523. The next prime is 22003213571. The reversal of 22003213543 is 34531230022.

It is not a de Polignac number, because 22003213543 - 2¹⁷ = 22003082471 is a prime.

It is a super-2 number, since 2×22003213543² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003213523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38067555 + ... + 38068132.

Almost surely, 2^22003213543 is an apocalyptic number.

22003213543 is a deficient number, since it is larger than the sum of its proper divisors (1370442673).

22003213543 is an equidigital number, since it uses as much as digits as its factorization.

22003213543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76135721 (or 76135704 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 22003213543 its reverse (34531230022), we get a palindrome (56534443565).

The spelling of 22003213543 in words is "twenty-two billion, three million, two hundred thirteen thousand, five hundred forty-three".