22001313 has 4 divisors (see below), whose sum is σ = 29335088. Its totient is φ = 14667540.

The previous prime is 22001303. The next prime is 22001321. The reversal of 22001313 is 31310022.

It is a happy number.

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 not a de Polignac number, because 22001313 - 2⁹ = 22000801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22001303) 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, 3666883 + ... + 3666888.

It is an arithmetic number, because the mean of its divisors is an integer number (7333772).

Almost surely, 2^22001313 is an apocalyptic number.

It is an amenable number.

22001313 is a deficient number, since it is larger than the sum of its proper divisors (7333775).

22001313 is an equidigital number, since it uses as much as digits as its factorization.

22001313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333774.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 22001313 is about 4690.5557240054. Note that the first 3 decimals coincide. The cubic root of 22001313 is about 280.2095073147.

Adding to 22001313 its reverse (31310022), we get a palindrome (53311335).

The spelling of 22001313 in words is "twenty-two million, one thousand, three hundred thirteen".