20223209999 has 4 divisors (see below), whose sum is σ = 20347278936. Its totient is φ = 20099141064.

The previous prime is 20223209969. The next prime is 20223210011. The reversal of 20223209999 is 99990232202.

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 20223209999 - 2¹² = 20223205903 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 (20223209959) 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, 62034224 + ... + 62034549.

It is an arithmetic number, because the mean of its divisors is an integer number (5086819734).

Almost surely, 2^20223209999 is an apocalyptic number.

20223209999 is a deficient number, since it is larger than the sum of its proper divisors (124068937).

20223209999 is a wasteful number, since it uses less digits than its factorization.

20223209999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124068936.

The product of its (nonzero) digits is 314928, while the sum is 47.

The spelling of 20223209999 in words is "twenty billion, two hundred twenty-three million, two hundred nine thousand, nine hundred ninety-nine".