12213023211 has 8 divisors (see below), whose sum is σ = 18093367760. Its totient is φ = 8142015456.

The previous prime is 12213023203. The next prime is 12213023219. The reversal of 12213023211 is 11232031221.

It is an interprime number because it is at equal distance from previous prime (12213023203) and next prime (12213023219).

It is not a de Polignac number, because 12213023211 - 2³ = 12213023203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213023219) 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, 226167070 + ... + 226167123.

It is an arithmetic number, because the mean of its divisors is an integer number (2261670970).

Almost surely, 2^12213023211 is an apocalyptic number.

12213023211 is a deficient number, since it is larger than the sum of its proper divisors (5880344549).

12213023211 is an equidigital number, since it uses as much as digits as its factorization.

12213023211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452334202 (or 452334196 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12213023211 its reverse (11232031221), we get a palindrome (23445054432).

The spelling of 12213023211 in words is "twelve billion, two hundred thirteen million, twenty-three thousand, two hundred eleven".