20113223211 has 32 divisors (see below), whose sum is σ = 30553797120. Its totient is φ = 13069721952.

The previous prime is 20113223183. The next prime is 20113223213. The reversal of 20113223211 is 11232231102.

20113223211 is a `hidden beast` number, since 20 + 1 + 1 + 322 + 321 + 1 = 666.

It is not a de Polignac number, because 20113223211 - 2⁷ = 20113223083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20113223213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547621 + ... + 583193.

It is an arithmetic number, because the mean of its divisors is an integer number (954806160).

Almost surely, 2^20113223211 is an apocalyptic number.

20113223211 is a deficient number, since it is larger than the sum of its proper divisors (10440573909).

20113223211 is a wasteful number, since it uses less digits than its factorization.

20113223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36112 (or 36106 counting only the distinct ones).

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

Adding to 20113223211 its reverse (11232231102), we get a palindrome (31345454313).

The spelling of 20113223211 in words is "twenty billion, one hundred thirteen million, two hundred twenty-three thousand, two hundred eleven".