2221440913 has 2 divisors, whose sum is σ = 2221440914. Its totient is φ = 2221440912.

The previous prime is 2221440883. The next prime is 2221440961. The reversal of 2221440913 is 3190441222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1954347264 + 267093649 = 44208^2 + 16343^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221440913 - 2¹⁷ = 2221309841 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221440973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110720456 + 1110720457.

It is an arithmetic number, because the mean of its divisors is an integer number (1110720457).

Almost surely, 2^2221440913 is an apocalyptic number.

It is an amenable number.

2221440913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221440913 is an equidigital number, since it uses as much as digits as its factorization.

2221440913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2221440913 is about 47132.1643148286. The cubic root of 2221440913 is about 1304.8029263530.

The spelling of 2221440913 in words is "two billion, two hundred twenty-one million, four hundred forty thousand, nine hundred thirteen".