2240022221 has 8 divisors (see below), whose sum is σ = 2398439160. Its totient is φ = 2084566528.

The previous prime is 2240022203. The next prime is 2240022227. The reversal of 2240022221 is 1222200422.

It can be written as a sum of positive squares in 4 ways, for example, as 48846121 + 2191176100 = 6989^2 + 46810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2240022221 - 2¹⁰ = 2240021197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2240022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240022227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738746 + ... + 741771.

It is an arithmetic number, because the mean of its divisors is an integer number (299804895).

Almost surely, 2^2240022221 is an apocalyptic number.

It is an amenable number.

2240022221 is a deficient number, since it is larger than the sum of its proper divisors (158416939).

2240022221 is a wasteful number, since it uses less digits than its factorization.

2240022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480623.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2240022221 is about 47328.8730163734. The cubic root of 2240022221 is about 1308.4308506304.

Adding to 2240022221 its reverse (1222200422), we get a palindrome (3462222643).

The spelling of 2240022221 in words is "two billion, two hundred forty million, twenty-two thousand, two hundred twenty-one".