20111303223 has 24 divisors (see below), whose sum is σ = 31697237520. Its totient is φ = 12186092160.

The previous prime is 20111303209. The next prime is 20111303323. The reversal of 20111303223 is 32230311102.

It is not a de Polignac number, because 20111303223 - 2¹⁶ = 20111237687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111303196 and 20111303205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111303323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 517123 + ... + 554651.

It is an arithmetic number, because the mean of its divisors is an integer number (1320718230).

Almost surely, 2^20111303223 is an apocalyptic number.

20111303223 is a deficient number, since it is larger than the sum of its proper divisors (11585934297).

20111303223 is a wasteful number, since it uses less digits than its factorization.

20111303223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42959 (or 42956 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20111303223 its reverse (32230311102), we get a palindrome (52341614325).

The spelling of 20111303223 in words is "twenty billion, one hundred eleven million, three hundred three thousand, two hundred twenty-three".