22200106009 has 3 divisors (see below), whose sum is σ = 22200255007. Its totient is φ = 22199957012.

The previous prime is 22200105971. The next prime is 22200106021. The reversal of 22200106009 is 90060100222.

It is a happy number.

The square root of 22200106009 is 148997.

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 can be written as a sum of positive squares in only one way, i.e., 22199510025 + 595984 = 148995^2 + 772^2 .

It is not a de Polignac number, because 22200106009 - 2⁷ = 22200105881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22200106039) 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, 74499 + ... + 223495.

Almost surely, 2^22200106009 is an apocalyptic number.

22200106009 is the 148997-th square number.

22200106009 is the 74499-th centered octagonal number.

It is an amenable number.

22200106009 is a deficient number, since it is larger than the sum of its proper divisors (148998).

22200106009 is an frugal number, since it uses more digits than its factorization.

22200106009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297994 (or 148997 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 22200106009 in words is "twenty-two billion, two hundred million, one hundred six thousand, nine".