2240012321 has 4 divisors (see below), whose sum is σ = 2240552772. Its totient is φ = 2239471872.

The previous prime is 2240012311. The next prime is 2240012351. The reversal of 2240012321 is 1232100422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2091781696 + 148230625 = 45736^2 + 12175^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240012321 - 2¹⁰ = 2240011297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2240012321.

It is not an unprimeable number, because it can be changed into a prime (2240012311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263960 + ... + 272313.

It is an arithmetic number, because the mean of its divisors is an integer number (560138193).

Almost surely, 2^2240012321 is an apocalyptic number.

It is an amenable number.

2240012321 is a deficient number, since it is larger than the sum of its proper divisors (540451).

2240012321 is an equidigital number, since it uses as much as digits as its factorization.

2240012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540450.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2240012321 is about 47328.7684289376. The cubic root of 2240012321 is about 1308.4289230477.

Adding to 2240012321 its reverse (1232100422), we get a palindrome (3472112743).

The spelling of 2240012321 in words is "two billion, two hundred forty million, twelve thousand, three hundred twenty-one".