13120220 has 24 divisors (see below), whose sum is σ = 27840624. Its totient is φ = 5193216.

The previous prime is 13120213. The next prime is 13120231. The reversal of 13120220 is 2202131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 1442 + ... + 5321.

It is an arithmetic number, because the mean of its divisors is an integer number (1160026).

Almost surely, 2^13120220 is an apocalyptic number.

13120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120220 is an abundant number, since it is smaller than the sum of its proper divisors (14720404).

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

13120220 is a wasteful number, since it uses less digits than its factorization.

13120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6869 (or 6867 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 13120220 is about 3622.1844237973. The cubic root of 13120220 is about 235.8560598852.

Adding to 13120220 its reverse (2202131), we get a palindrome (15322351).

The spelling of 13120220 in words is "thirteen million, one hundred twenty thousand, two hundred twenty".