23222021213 has 4 divisors (see below), whose sum is σ = 23222476608. Its totient is φ = 23221565820.

The previous prime is 23222021209. The next prime is 23222021219. The reversal of 23222021213 is 31212022232.

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.

It is a cyclic number.

It is not a de Polignac number, because 23222021213 - 2² = 23222021209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23222021219) 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, 139931 + ... + 256952.

It is an arithmetic number, because the mean of its divisors is an integer number (5805619152).

Almost surely, 2^23222021213 is an apocalyptic number.

It is an amenable number.

23222021213 is a deficient number, since it is larger than the sum of its proper divisors (455395).

23222021213 is an equidigital number, since it uses as much as digits as its factorization.

23222021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455394.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23222021213 its reverse (31212022232), we get a palindrome (54434043445).

The spelling of 23222021213 in words is "twenty-three billion, two hundred twenty-two million, twenty-one thousand, two hundred thirteen".