20221010109 has 12 divisors (see below), whose sum is σ = 29686948252. Its totient is φ = 13259678400.

The previous prime is 20221010101. The next prime is 20221010137. The reversal of 20221010109 is 90101012202.

It can be written as a sum of positive squares in 2 ways, for example, as 5439800025 + 14781210084 = 73755^2 + 121578^2 .

It is not a de Polignac number, because 20221010109 - 2³ = 20221010101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221010091 and 20221010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221010101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18415672 + ... + 18416769.

Almost surely, 2^20221010109 is an apocalyptic number.

It is an amenable number.

20221010109 is a deficient number, since it is larger than the sum of its proper divisors (9465938143).

20221010109 is a wasteful number, since it uses less digits than its factorization.

20221010109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36832508 (or 36832505 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 20221010109 in words is "twenty billion, two hundred twenty-one million, ten thousand, one hundred nine".