11111012423 has 8 divisors (see below), whose sum is σ = 13008014880. Its totient is φ = 9291438720.

The previous prime is 11111012417. The next prime is 11111012447. The reversal of 11111012423 is 32421011111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111012423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111012623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19356878 + ... + 19357451.

It is an arithmetic number, because the mean of its divisors is an integer number (1626001860).

Almost surely, 2^11111012423 is an apocalyptic number.

11111012423 is a deficient number, since it is larger than the sum of its proper divisors (1897002457).

11111012423 is an equidigital number, since it uses as much as digits as its factorization.

11111012423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38714377.

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

Adding to 11111012423 its reverse (32421011111), we get a palindrome (43532023534).

The spelling of 11111012423 in words is "eleven billion, one hundred eleven million, twelve thousand, four hundred twenty-three".