20023311111 has 8 divisors (see below), whose sum is σ = 26698815360. Its totient is φ = 13348340472.

The previous prime is 20023311083. The next prime is 20023311149. The reversal of 20023311111 is 11111332002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20023311111 - 2⁵ = 20023311079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023311811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35601 + ... + 203258.

It is an arithmetic number, because the mean of its divisors is an integer number (3337351920).

Almost surely, 2^20023311111 is an apocalyptic number.

20023311111 is a deficient number, since it is larger than the sum of its proper divisors (6675504249).

20023311111 is a wasteful number, since it uses less digits than its factorization.

20023311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266805.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20023311111 its reverse (11111332002), we get a palindrome (31134643113).

The spelling of 20023311111 in words is "twenty billion, twenty-three million, three hundred eleven thousand, one hundred eleven".