11200421534 has 4 divisors (see below), whose sum is σ = 16800632304. Its totient is φ = 5600210766.

The previous prime is 11200421503. The next prime is 11200421543. The reversal of 11200421534 is 43512400211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43512400211 = 7 ⋅6216057173.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800105382 + ... + 2800105385.

It is an arithmetic number, because the mean of its divisors is an integer number (4200158076).

Almost surely, 2^11200421534 is an apocalyptic number.

11200421534 is a deficient number, since it is larger than the sum of its proper divisors (5600210770).

11200421534 is an equidigital number, since it uses as much as digits as its factorization.

11200421534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600210769.

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

Adding to 11200421534 its reverse (43512400211), we get a palindrome (54712821745).

The spelling of 11200421534 in words is "eleven billion, two hundred million, four hundred twenty-one thousand, five hundred thirty-four".