20101111023 has 32 divisors (see below), whose sum is σ = 31167774720. Its totient is φ = 11285013600.

The previous prime is 20101111007. The next prime is 20101111031. The reversal of 20101111023 is 32011110102.

It is not a de Polignac number, because 20101111023 - 2⁴ = 20101111007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101111003) 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, 2730798 + ... + 2738148.

It is an arithmetic number, because the mean of its divisors is an integer number (973992960).

Almost surely, 2^20101111023 is an apocalyptic number.

20101111023 is a deficient number, since it is larger than the sum of its proper divisors (11066663697).

20101111023 is a wasteful number, since it uses less digits than its factorization.

20101111023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9627.

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

Adding to 20101111023 its reverse (32011110102), we get a palindrome (52112221125).

The spelling of 20101111023 in words is "twenty billion, one hundred one million, one hundred eleven thousand, twenty-three".