22351147009 has 3 divisors (see below), whose sum is σ = 22351296513. Its totient is φ = 22350997506.

The previous prime is 22351146911. The next prime is 22351147051. The reversal of 22351147009 is 90074115322.

It is a happy number.

The square root of 22351147009 is 149503.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 22351147009 - 2¹⁵ = 22351114241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22351147309) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 74752 + ... + 224254.

It is an arithmetic number, because the mean of its divisors is an integer number (7450432171).

Almost surely, 2^22351147009 is an apocalyptic number.

22351147009 is the 149503-rd square number.

22351147009 is the 74752-nd centered octagonal number.

It is an amenable number.

22351147009 is a deficient number, since it is larger than the sum of its proper divisors (149504).

22351147009 is an frugal number, since it uses more digits than its factorization.

22351147009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299006 (or 149503 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 22351147009 in words is "twenty-two billion, three hundred fifty-one million, one hundred forty-seven thousand, nine".