2022121091 has 4 divisors (see below), whose sum is σ = 2065144992. Its totient is φ = 1979097192.

The previous prime is 2022121081. The next prime is 2022121093. The reversal of 2022121091 is 1901212202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2022121091 - 2⁶ = 2022121027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2022121093) 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, 21511880 + ... + 21511973.

It is an arithmetic number, because the mean of its divisors is an integer number (516286248).

Almost surely, 2^2022121091 is an apocalyptic number.

2022121091 is a deficient number, since it is larger than the sum of its proper divisors (43023901).

2022121091 is an equidigital number, since it uses as much as digits as its factorization.

2022121091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43023900.

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

The square root of 2022121091 is about 44968.0007449742. Note that the first 3 decimals coincide. The cubic root of 2022121091 is about 1264.5491664723.

Adding to 2022121091 its reverse (1901212202), we get a palindrome (3923333293).

The spelling of 2022121091 in words is "two billion, twenty-two million, one hundred twenty-one thousand, ninety-one".