11554421227 has 12 divisors (see below), whose sum is σ = 12231523416. Its totient is φ = 10913110560.

The previous prime is 11554421213. The next prime is 11554421237. The reversal of 11554421227 is 72212445511.

It is not a de Polignac number, because 11554421227 - 2²⁷ = 11420203499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11554421192 and 11554421201.

It is not an unprimeable number, because it can be changed into a prime (11554421237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71143 + ... + 167839.

It is an arithmetic number, because the mean of its divisors is an integer number (1019293618).

Almost surely, 2^11554421227 is an apocalyptic number.

11554421227 is a deficient number, since it is larger than the sum of its proper divisors (677102189).

11554421227 is an equidigital number, since it uses as much as digits as its factorization.

11554421227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97066 (or 97047 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

Adding to 11554421227 its reverse (72212445511), we get a palindrome (83766866738).

The spelling of 11554421227 in words is "eleven billion, five hundred fifty-four million, four hundred twenty-one thousand, two hundred twenty-seven".