13223021221123 has 16 divisors (see below), whose sum is σ = 15121715343040. Its totient is φ = 11326751769600.

The previous prime is 13223021220989. The next prime is 13223021221127. The reversal of 13223021221123 is 32112212032231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13223021221123 is a prime.

It is a super-2 number, since 2×13223021221123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223021221127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87979183 + ... + 88129351.

It is an arithmetic number, because the mean of its divisors is an integer number (945107208940).

Almost surely, 2^{13223021221123} is an apocalyptic number.

13223021221123 is a deficient number, since it is larger than the sum of its proper divisors (1898694121917).

13223021221123 is a wasteful number, since it uses less digits than its factorization.

13223021221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158158.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 13223021221123 its reverse (32112212032231), we get a palindrome (45335233253354).

The spelling of 13223021221123 in words is "thirteen trillion, two hundred twenty-three billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-three".