13421111 has 8 divisors (see below), whose sum is σ = 14806800. Its totient is φ = 12063040.

The previous prime is 13421071. The next prime is 13421129. The reversal of 13421111 is 11112431.

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

It is a de Polignac number, because none of the positive numbers 2^k-13421111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5876 + ... + 7833.

It is an arithmetic number, because the mean of its divisors is an integer number (1850850).

Almost surely, 2^13421111 is an apocalyptic number.

13421111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13421111 is a deficient number, since it is larger than the sum of its proper divisors (1385689).

13421111 is a wasteful number, since it uses less digits than its factorization.

13421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13809.

The product of its digits is 24, while the sum is 14.

The square root of 13421111 is about 3663.4834515799. The cubic root of 13421111 is about 237.6454422166.

Adding to 13421111 its reverse (11112431), we get a palindrome (24533542).

It can be divided in two parts, 13 and 421111, that added together give a palindrome (421124).

The spelling of 13421111 in words is "thirteen million, four hundred twenty-one thousand, one hundred eleven".