23212211311 has 4 divisors (see below), whose sum is σ = 23222750152. Its totient is φ = 23201672472.

The previous prime is 23212211293. The next prime is 23212211333. The reversal of 23212211311 is 11311221232.

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 23212211311 - 2⁹ = 23212210799 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 (23212215311) 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, 5266116 + ... + 5270521.

It is an arithmetic number, because the mean of its divisors is an integer number (5805687538).

Almost surely, 2^23212211311 is an apocalyptic number.

23212211311 is a deficient number, since it is larger than the sum of its proper divisors (10538841).

23212211311 is a wasteful number, since it uses less digits than its factorization.

23212211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538840.

The product of its digits is 144, while the sum is 19.

Adding to 23212211311 its reverse (11311221232), we get a palindrome (34523432543).

The spelling of 23212211311 in words is "twenty-three billion, two hundred twelve million, two hundred eleven thousand, three hundred eleven".