11111210423 has 6 divisors (see below), whose sum is σ = 11507568384. Its totient is φ = 10728064424.

The previous prime is 11111210413. The next prime is 11111210441. The reversal of 11111210423 is 32401211111.

It is not a de Polignac number, because 11111210423 - 2⁶ = 11111210359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111210413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6605111 + ... + 6606792.

It is an arithmetic number, because the mean of its divisors is an integer number (1917928064).

Almost surely, 2^11111210423 is an apocalyptic number.

11111210423 is a deficient number, since it is larger than the sum of its proper divisors (396357961).

11111210423 is an equidigital number, since it uses as much as digits as its factorization.

11111210423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13211961 (or 13211932 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11111210423 its reverse (32401211111), we get a palindrome (43512421534).

The spelling of 11111210423 in words is "eleven billion, one hundred eleven million, two hundred ten thousand, four hundred twenty-three".