13111223021023 has 8 divisors (see below), whose sum is σ = 13235437438848. Its totient is φ = 12987039707544.

The previous prime is 13111223020979. The next prime is 13111223021077. The reversal of 13111223021023 is 32012032211131.

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-13111223021023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111223020985 and 13111223021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111223051023) 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, 6928611 + ... + 8615572.

It is an arithmetic number, because the mean of its divisors is an integer number (1654429679856).

Almost surely, 2^{13111223021023} is an apocalyptic number.

13111223021023 is a deficient number, since it is larger than the sum of its proper divisors (124214417825).

13111223021023 is a wasteful number, since it uses less digits than its factorization.

13111223021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15552173.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13111223021023 its reverse (32012032211131), we get a palindrome (45123255232154).

The spelling of 13111223021023 in words is "thirteen trillion, one hundred eleven billion, two hundred twenty-three million, twenty-one thousand, twenty-three".