2023121221 has 8 divisors (see below), whose sum is σ = 2207489184. Its totient is φ = 1838827920.

The previous prime is 2023121209. The next prime is 2023121237. The reversal of 2023121221 is 1221213202.

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 2023121221 - 2⁵ = 2023121189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2023121195 and 2023121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023121201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48535 + ... + 80011.

It is an arithmetic number, because the mean of its divisors is an integer number (275936148).

Almost surely, 2^2023121221 is an apocalyptic number.

It is an amenable number.

2023121221 is a deficient number, since it is larger than the sum of its proper divisors (184367963).

2023121221 is a wasteful number, since it uses less digits than its factorization.

2023121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37331.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2023121221 is about 44979.1198335405. The cubic root of 2023121221 is about 1264.7576118046.

Adding to 2023121221 its reverse (1221213202), we get a palindrome (3244334423).

The spelling of 2023121221 in words is "two billion, twenty-three million, one hundred twenty-one thousand, two hundred twenty-one".