220020109 has 4 divisors (see below), whose sum is σ = 220050016. Its totient is φ = 219990204.

The previous prime is 220020091. The next prime is 220020149. The reversal of 220020109 is 901020022.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220020109 - 2¹¹ = 220018061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220020092 and 220020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020149) 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, 4642 + ... + 21484.

It is an arithmetic number, because the mean of its divisors is an integer number (55012504).

Almost surely, 2^220020109 is an apocalyptic number.

It is an amenable number.

220020109 is a deficient number, since it is larger than the sum of its proper divisors (29907).

220020109 is a wasteful number, since it uses less digits than its factorization.

220020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29906.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 220020109 is about 14833.0748329536. The cubic root of 220020109 is about 603.6994661841.

The spelling of 220020109 in words is "two hundred twenty million, twenty thousand, one hundred nine".