12201280 has 112 divisors (see below), whose sum is σ = 35844480. Its totient is φ = 3852288.

The previous prime is 12201269. The next prime is 12201283. The reversal of 12201280 is 8210221.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28911 + ... + 29329.

It is an arithmetic number, because the mean of its divisors is an integer number (320040).

Almost surely, 2^12201280 is an apocalyptic number.

12201280 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 12201280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17922240).

12201280 is an abundant number, since it is smaller than the sum of its proper divisors (23643200).

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

12201280 is a wasteful number, since it uses less digits than its factorization.

12201280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 12201280 is about 3493.0330659758. The cubic root of 12201280 is about 230.2158024963.

It can be divided in two parts, 1220 and 1280, that added together give a square (2500 = 50²).

The spelling of 12201280 in words is "twelve million, two hundred one thousand, two hundred eighty".