20221210109 has 4 divisors (see below), whose sum is σ = 20317045440. Its totient is φ = 20125374780.

The previous prime is 20221210073. The next prime is 20221210153. The reversal of 20221210109 is 90101212202.

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.

It is a cyclic number.

It is not a de Polignac number, because 20221210109 - 2¹² = 20221206013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221210159) 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, 47917349 + ... + 47917770.

It is an arithmetic number, because the mean of its divisors is an integer number (5079261360).

Almost surely, 2^20221210109 is an apocalyptic number.

It is an amenable number.

20221210109 is a deficient number, since it is larger than the sum of its proper divisors (95835331).

20221210109 is an equidigital number, since it uses as much as digits as its factorization.

20221210109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95835330.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 20221210109 in words is "twenty billion, two hundred twenty-one million, two hundred ten thousand, one hundred nine".