11200421543 has 2 divisors, whose sum is σ = 11200421544. Its totient is φ = 11200421542.

The previous prime is 11200421503. The next prime is 11200421569. The reversal of 11200421543 is 34512400211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11200421543 - 2¹⁴ = 11200405159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11200421503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600210771 + 5600210772.

It is an arithmetic number, because the mean of its divisors is an integer number (5600210772).

Almost surely, 2^11200421543 is an apocalyptic number.

11200421543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200421543 is an equidigital number, since it uses as much as digits as its factorization.

11200421543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 11200421543 its reverse (34512400211), we get a palindrome (45712821754).

The spelling of 11200421543 in words is "eleven billion, two hundred million, four hundred twenty-one thousand, five hundred forty-three".