23211012211 has 4 divisors (see below), whose sum is σ = 23217090624. Its totient is φ = 23204933800.

The previous prime is 23211012191. The next prime is 23211012229. The reversal of 23211012211 is 11221011232.

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 23211012211 - 2⁵ = 23211012179 is a prime.

It is a super-2 number, since 2×23211012211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211012241) 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, 3033475 + ... + 3041116.

It is an arithmetic number, because the mean of its divisors is an integer number (5804272656).

Almost surely, 2^23211012211 is an apocalyptic number.

23211012211 is a deficient number, since it is larger than the sum of its proper divisors (6078413).

23211012211 is an equidigital number, since it uses as much as digits as its factorization.

23211012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078412.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 23211012211 its reverse (11221011232), we get a palindrome (34432023443).

The spelling of 23211012211 in words is "twenty-three billion, two hundred eleven million, twelve thousand, two hundred eleven".