2022100009 has 4 divisors (see below), whose sum is σ = 2035671300. Its totient is φ = 2008528720.

The previous prime is 2022099997. The next prime is 2022100013. The reversal of 2022100009 is 9000012202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9000012202 = 2 ⋅4500006101.

It can be written as a sum of positive squares in 2 ways, for example, as 1257411600 + 764688409 = 35460^2 + 27653^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022100009 - 2⁵ = 2022099977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2022099965 and 2022100001.

It is not an unprimeable number, because it can be changed into a prime (2022100019) 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, 6785422 + ... + 6785719.

It is an arithmetic number, because the mean of its divisors is an integer number (508917825).

Almost surely, 2^2022100009 is an apocalyptic number.

It is an amenable number.

2022100009 is a deficient number, since it is larger than the sum of its proper divisors (13571291).

2022100009 is a wasteful number, since it uses less digits than its factorization.

2022100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13571290.

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

The square root of 2022100009 is about 44967.7663332303. The cubic root of 2022100009 is about 1264.5447718595.

The spelling of 2022100009 in words is "two billion, twenty-two million, one hundred thousand, nine".