2023211221 has 4 divisors (see below), whose sum is σ = 2023315200. Its totient is φ = 2023107244.

The previous prime is 2023211149. The next prime is 2023211231. The reversal of 2023211221 is 1221123202.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2023211221 - 2¹⁷ = 2023080149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2023211195 and 2023211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023211231) 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, 13111 + ... + 64948.

It is an arithmetic number, because the mean of its divisors is an integer number (505828800).

Almost surely, 2^2023211221 is an apocalyptic number.

It is an amenable number.

2023211221 is a deficient number, since it is larger than the sum of its proper divisors (103979).

2023211221 is an equidigital number, since it uses as much as digits as its factorization.

2023211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103978.

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

The square root of 2023211221 is about 44980.1202866333. The cubic root of 2023211221 is about 1264.7763660767.

Adding to 2023211221 its reverse (1221123202), we get a palindrome (3244334423).

The spelling of 2023211221 in words is "two billion, twenty-three million, two hundred eleven thousand, two hundred twenty-one".