2221040023 has 4 divisors (see below), whose sum is σ = 2297627640. Its totient is φ = 2144452408.

The previous prime is 2221040009. The next prime is 2221040039. The reversal of 2221040023 is 3200401222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221040023 - 2⁵ = 2221039991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221039979 and 2221040006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221040053) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 38293765 + ... + 38293822.

It is an arithmetic number, because the mean of its divisors is an integer number (574406910).

Almost surely, 2^2221040023 is an apocalyptic number.

2221040023 is a deficient number, since it is larger than the sum of its proper divisors (76587617).

2221040023 is an equidigital number, since it uses as much as digits as its factorization.

2221040023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76587616.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2221040023 is about 47127.9112946882. The cubic root of 2221040023 is about 1304.7244316680.

Adding to 2221040023 its reverse (3200401222), we get a palindrome (5421441245).

The spelling of 2221040023 in words is "two billion, two hundred twenty-one million, forty thousand, twenty-three".