13021223111 has 8 divisors (see below), whose sum is σ = 14200361280. Its totient is φ = 11867442912.

The previous prime is 13021223107. The next prime is 13021223129. The reversal of 13021223111 is 11132212031.

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

It is not a de Polignac number, because 13021223111 - 2² = 13021223107 is a prime.

It is a super-3 number, since 3×13021223111³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13021223111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021223161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6338420 + ... + 6340473.

It is an arithmetic number, because the mean of its divisors is an integer number (1775045160).

Almost surely, 2^13021223111 is an apocalyptic number.

13021223111 is a deficient number, since it is larger than the sum of its proper divisors (1179138169).

13021223111 is a wasteful number, since it uses less digits than its factorization.

13021223111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12678985.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13021223111 its reverse (11132212031), we get a palindrome (24153435142).

The spelling of 13021223111 in words is "thirteen billion, twenty-one million, two hundred twenty-three thousand, one hundred eleven".