2221413509 has 4 divisors (see below), whose sum is σ = 2538758304. Its totient is φ = 1904068716.

The previous prime is 2221413461. The next prime is 2221413553. The reversal of 2221413509 is 9053141222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2221413509 - 2²⁴ = 2204636293 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 (2221413559) 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, 158672387 + ... + 158672400.

It is an arithmetic number, because the mean of its divisors is an integer number (634689576).

Almost surely, 2^2221413509 is an apocalyptic number.

It is an amenable number.

2221413509 is a deficient number, since it is larger than the sum of its proper divisors (317344795).

2221413509 is an equidigital number, since it uses as much as digits as its factorization.

2221413509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317344794.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2221413509 is about 47131.8735995080. The cubic root of 2221413509 is about 1304.7975609216.

The spelling of 2221413509 in words is "two billion, two hundred twenty-one million, four hundred thirteen thousand, five hundred nine".