2201212224 has 84 divisors (see below), whose sum is σ = 6680546964. Its totient is φ = 690573312.

The previous prime is 2201212151. The next prime is 2201212231. The reversal of 2201212224 is 4222121022.

It can be written as a sum of positive squares in 2 ways, for example, as 2046657600 + 154554624 = 45240^2 + 12432^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2201212197 and 2201212206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102607 + ... + 122190.

It is an arithmetic number, because the mean of its divisors is an integer number (79530321).

Almost surely, 2^2201212224 is an apocalyptic number.

2201212224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2201212224 is an abundant number, since it is smaller than the sum of its proper divisors (4479334740).

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

2201212224 is a wasteful number, since it uses less digits than its factorization.

2201212224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224832 (or 224819 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2201212224 is about 46917.0781698946. The cubic root of 2201212224 is about 1300.8302830148.

Adding to 2201212224 its reverse (4222121022), we get a palindrome (6423333246).

The spelling of 2201212224 in words is "two billion, two hundred one million, two hundred twelve thousand, two hundred twenty-four".