2220002391 has 4 divisors (see below), whose sum is σ = 2960003192. Its totient is φ = 1480001592.

The previous prime is 2220002387. The next prime is 2220002399. The reversal of 2220002391 is 1932000222.

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

It is not a de Polignac number, because 2220002391 - 2² = 2220002387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220002399) 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, 370000396 + ... + 370000401.

It is an arithmetic number, because the mean of its divisors is an integer number (740000798).

Almost surely, 2^2220002391 is an apocalyptic number.

2220002391 is a deficient number, since it is larger than the sum of its proper divisors (740000801).

2220002391 is an equidigital number, since it uses as much as digits as its factorization.

2220002391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740000800.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2220002391 is about 47116.9013306266. The cubic root of 2220002391 is about 1304.5212183550.

The spelling of 2220002391 in words is "two billion, two hundred twenty million, two thousand, three hundred ninety-one".