20023101111 has 8 divisors (see below), whose sum is σ = 28751119600. Its totient is φ = 12321908352.

The previous prime is 20023101089. The next prime is 20023101149. The reversal of 20023101111 is 11110132002.

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

It is not a de Polignac number, because 20023101111 - 2¹³ = 20023092919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023101181) 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, 256706386 + ... + 256706463.

It is an arithmetic number, because the mean of its divisors is an integer number (3593889950).

Almost surely, 2^20023101111 is an apocalyptic number.

20023101111 is a deficient number, since it is larger than the sum of its proper divisors (8728018489).

20023101111 is a wasteful number, since it uses less digits than its factorization.

20023101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513412865.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20023101111 its reverse (11110132002), we get a palindrome (31133233113).

The spelling of 20023101111 in words is "twenty billion, twenty-three million, one hundred one thousand, one hundred eleven".