20220109 has 8 divisors (see below), whose sum is σ = 24886400. Its totient is φ = 15998256.

The previous prime is 20220103. The next prime is 20220119. The reversal of 20220109 is 90102202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20220109 - 2⁵ = 20220077 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20220092 and 20220101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111009 + ... + 111190.

It is an arithmetic number, because the mean of its divisors is an integer number (3110800).

Almost surely, 2^20220109 is an apocalyptic number.

It is an amenable number.

20220109 is a deficient number, since it is larger than the sum of its proper divisors (4666291).

20220109 is a wasteful number, since it uses less digits than its factorization.

20220109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222219.

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

The square root of 20220109 is about 4496.6775512594. The cubic root of 20220109 is about 272.4339104097.

The spelling of 20220109 in words is "twenty million, two hundred twenty thousand, one hundred nine".