20020222309 has 4 divisors (see below), whose sum is σ = 21073918240. Its totient is φ = 18966526380.

The previous prime is 20020222283. The next prime is 20020222331. The reversal of 20020222309 is 90322202002.

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 20020222309 - 2⁹ = 20020221797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020222309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020220309) 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, 526847937 + ... + 526847974.

It is an arithmetic number, because the mean of its divisors is an integer number (5268479560).

Almost surely, 2^20020222309 is an apocalyptic number.

It is an amenable number.

20020222309 is a deficient number, since it is larger than the sum of its proper divisors (1053695931).

20020222309 is a wasteful number, since it uses less digits than its factorization.

20020222309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053695930.

The product of its (nonzero) digits is 864, while the sum is 22.

The spelling of 20020222309 in words is "twenty billion, twenty million, two hundred twenty-two thousand, three hundred nine".