12202240 has 36 divisors (see below), whose sum is σ = 29231244. Its totient is φ = 4880384.

The previous prime is 12202219. The next prime is 12202249. The reversal of 12202240 is 4220221.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 9048064 = 1776^2 + 3008^2 .

It is a super-2 number, since 2×12202240² = 297789322035200, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12202240.

It is not an unprimeable number, because it can be changed into a prime (12202249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3487 + ... + 6046.

It is an arithmetic number, because the mean of its divisors is an integer number (811979).

Almost surely, 2^12202240 is an apocalyptic number.

12202240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12202240 is an abundant number, since it is smaller than the sum of its proper divisors (17029004).

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

12202240 is an frugal number, since it uses more digits than its factorization.

12202240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554 (or 9540 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 12202240 is about 3493.1704796646. The cubic root of 12202240 is about 230.2218401517.

Adding to 12202240 its reverse (4220221), we get a palindrome (16422461).

The spelling of 12202240 in words is "twelve million, two hundred two thousand, two hundred forty".