20011223232023 has 8 divisors (see below), whose sum is σ = 20933874099168. Its totient is φ = 19092955505184.

The previous prime is 20011223232019. The next prime is 20011223232029. The reversal of 20011223232023 is 32023232211002.

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

It is a cyclic number.

It is not a de Polignac number, because 20011223232023 - 2² = 20011223232019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20011223232023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011223232029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095775736 + ... + 1095793997.

It is an arithmetic number, because the mean of its divisors is an integer number (2616734262396).

Almost surely, 2^{20011223232023} is an apocalyptic number.

20011223232023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20011223232023 is a deficient number, since it is larger than the sum of its proper divisors (922650867145).

20011223232023 is a wasteful number, since it uses less digits than its factorization.

20011223232023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191570153.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20011223232023 its reverse (32023232211002), we get a palindrome (52034455443025).

The spelling of 20011223232023 in words is "twenty trillion, eleven billion, two hundred twenty-three million, two hundred thirty-two thousand, twenty-three".