13222140 has 24 divisors (see below), whose sum is σ = 37022160. Its totient is φ = 3525888.

The previous prime is 13222133. The next prime is 13222159. The reversal of 13222140 is 4122231.

13222140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110125 + ... + 110244.

It is an arithmetic number, because the mean of its divisors is an integer number (1542590).

Almost surely, 2^13222140 is an apocalyptic number.

13222140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13222140 is an abundant number, since it is smaller than the sum of its proper divisors (23800020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13222140 is a wasteful number, since it uses less digits than its factorization.

13222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220381 (or 220379 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13222140 is about 3636.2260655795. The cubic root of 13222140 is about 236.4652080044.

Adding to 13222140 its reverse (4122231), we get a palindrome (17344371).

Subtracting from 13222140 its reverse (4122231), we obtain a palindrome (9099909).

The spelling of 13222140 in words is "thirteen million, two hundred twenty-two thousand, one hundred forty".