11212142423 has 2 divisors, whose sum is σ = 11212142424. Its totient is φ = 11212142422.

The previous prime is 11212142377. The next prime is 11212142441. The reversal of 11212142423 is 32424121211.

It is a strong prime.

It is an emirp because it is prime and its reverse (32424121211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212142423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212142443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606071211 + 5606071212.

It is an arithmetic number, because the mean of its divisors is an integer number (5606071212).

Almost surely, 2^11212142423 is an apocalyptic number.

11212142423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212142423 is an equidigital number, since it uses as much as digits as its factorization.

11212142423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

Adding to 11212142423 its reverse (32424121211), we get a palindrome (43636263634).

The spelling of 11212142423 in words is "eleven billion, two hundred twelve million, one hundred forty-two thousand, four hundred twenty-three".