23213221011 has 12 divisors (see below), whose sum is σ = 34611828160. Its totient is φ = 14976271440.

The previous prime is 23213220991. The next prime is 23213221033. The reversal of 23213221011 is 11012231232.

23213221011 is a `hidden beast` number, since 2 + 321 + 322 + 10 + 11 = 666.

It is not a de Polignac number, because 23213221011 - 2¹⁹ = 23212696723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23213221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41600476 + ... + 41601033.

Almost surely, 2^23213221011 is an apocalyptic number.

23213221011 is a deficient number, since it is larger than the sum of its proper divisors (11398607149).

23213221011 is a wasteful number, since it uses less digits than its factorization.

23213221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83201546 (or 83201543 counting only the distinct ones).

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

Adding to 23213221011 its reverse (11012231232), we get a palindrome (34225452243).

The spelling of 23213221011 in words is "twenty-three billion, two hundred thirteen million, two hundred twenty-one thousand, eleven".