2221319587 has 4 divisors (see below), whose sum is σ = 2222101576. Its totient is φ = 2220537600.

The previous prime is 2221319579. The next prime is 2221319627. The reversal of 2221319587 is 7859131222.

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 2221319587 - 2³ = 2221319579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221319557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386718 + ... + 392419.

It is an arithmetic number, because the mean of its divisors is an integer number (555525394).

Almost surely, 2^2221319587 is an apocalyptic number.

2221319587 is a deficient number, since it is larger than the sum of its proper divisors (781989).

2221319587 is an equidigital number, since it uses as much as digits as its factorization.

2221319587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781988.

The product of its digits is 60480, while the sum is 40.

The square root of 2221319587 is about 47130.8772144122. The cubic root of 2221319587 is about 1304.7791715908.

The spelling of 2221319587 in words is "two billion, two hundred twenty-one million, three hundred nineteen thousand, five hundred eighty-seven".