13100220 has 144 divisors (see below), whose sum is σ = 46807488. Its totient is φ = 2903040.

The previous prime is 13100209. The next prime is 13100221. The reversal of 13100220 is 2200131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13100221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46480 + ... + 46760.

It is an arithmetic number, because the mean of its divisors is an integer number (325052).

Almost surely, 2^13100220 is an apocalyptic number.

13100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23403744).

13100220 is an abundant number, since it is smaller than the sum of its proper divisors (33707268).

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

13100220 is a wasteful number, since it uses less digits than its factorization.

13100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 13100220 is about 3619.4226058862. The cubic root of 13100220 is about 235.7361553892.

Adding to 13100220 its reverse (2200131), we get a palindrome (15300351).

The spelling of 13100220 in words is "thirteen million, one hundred thousand, two hundred twenty".