11212234427 has 2 divisors, whose sum is σ = 11212234428. Its totient is φ = 11212234426.

The previous prime is 11212234403. The next prime is 11212234433. The reversal of 11212234427 is 72443221211.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72443221211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212234427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11212234427.

It is not a weakly prime, because it can be changed into another prime (11212234487) 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 as a sum of consecutive naturals, namely, 5606117213 + 5606117214.

It is an arithmetic number, because the mean of its divisors is an integer number (5606117214).

Almost surely, 2^11212234427 is an apocalyptic number.

11212234427 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212234427 is an equidigital number, since it uses as much as digits as its factorization.

11212234427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

Adding to 11212234427 its reverse (72443221211), we get a palindrome (83655455638).

The spelling of 11212234427 in words is "eleven billion, two hundred twelve million, two hundred thirty-four thousand, four hundred twenty-seven".