20101223023 has 8 divisors (see below), whose sum is σ = 22982969120. Its totient is φ = 17222012640.

The previous prime is 20101223017. The next prime is 20101223039. The reversal of 20101223023 is 32032210102.

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

It is not a de Polignac number, because 20101223023 - 2⁹ = 20101222511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101222988 and 20101223006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101253023) 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, 616908 + ... + 648673.

It is an arithmetic number, because the mean of its divisors is an integer number (2872871140).

Almost surely, 2^20101223023 is an apocalyptic number.

20101223023 is a deficient number, since it is larger than the sum of its proper divisors (2881746097).

20101223023 is a wasteful number, since it uses less digits than its factorization.

20101223023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267857.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20101223023 its reverse (32032210102), we get a palindrome (52133433125).

The spelling of 20101223023 in words is "twenty billion, one hundred one million, two hundred twenty-three thousand, twenty-three".