13221123 has 8 divisors (see below), whose sum is σ = 17876736. Its totient is φ = 8689800.

The previous prime is 13221101. The next prime is 13221137. The reversal of 13221123 is 32112231.

13221123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13221123 - 2⁶ = 13221059 is a prime.

It is a super-2 number, since 2×13221123² = 349596186762258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13221623) 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, 30823 + ... + 31248.

It is an arithmetic number, because the mean of its divisors is an integer number (2234592).

Almost surely, 2^13221123 is an apocalyptic number.

13221123 is a deficient number, since it is larger than the sum of its proper divisors (4655613).

13221123 is an equidigital number, since it uses as much as digits as its factorization.

13221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62145.

The product of its digits is 72, while the sum is 15.

The square root of 13221123 is about 3636.0862200998. The cubic root of 13221123 is about 236.4591451612.

Adding to 13221123 its reverse (32112231), we get a palindrome (45333354).

It can be divided in two parts, 1322112 and 3, that multiplied together give a triangular number (3966336 = T₂₈₁₆).

The spelling of 13221123 in words is "thirteen million, two hundred twenty-one thousand, one hundred twenty-three".