11550543042211 has 4 divisors (see below), whose sum is σ = 11575490219872. Its totient is φ = 11525595864552.

The previous prime is 11550543042173. The next prime is 11550543042263. The reversal of 11550543042211 is 11224034505511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11550543042211 - 2¹¹ = 11550543040163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11550543043211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12473588136 + ... + 12473589061.

It is an arithmetic number, because the mean of its divisors is an integer number (2893872554968).

Almost surely, 2^{11550543042211} is an apocalyptic number.

11550543042211 is a deficient number, since it is larger than the sum of its proper divisors (24947177661).

11550543042211 is an equidigital number, since it uses as much as digits as its factorization.

11550543042211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24947177660.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 11550543042211 its reverse (11224034505511), we get a palindrome (22774577547722).

The spelling of 11550543042211 in words is "eleven trillion, five hundred fifty billion, five hundred forty-three million, forty-two thousand, two hundred eleven".