20010023111 has 16 divisors (see below), whose sum is σ = 22824442368. Its totient is φ = 17378496000.

The previous prime is 20010023083. The next prime is 20010023119. The reversal of 20010023111 is 11132001002.

It is a cyclic number.

It is not a de Polignac number, because 20010023111 - 2²² = 20005828807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010023092 and 20010023101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010023119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 736061 + ... + 762761.

It is an arithmetic number, because the mean of its divisors is an integer number (1426527648).

Almost surely, 2^20010023111 is an apocalyptic number.

20010023111 is a deficient number, since it is larger than the sum of its proper divisors (2814419257).

20010023111 is a wasteful number, since it uses less digits than its factorization.

20010023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30122.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20010023111 its reverse (11132001002), we get a palindrome (31142024113).

The spelling of 20010023111 in words is "twenty billion, ten million, twenty-three thousand, one hundred eleven".