20001033131223 has 32 divisors (see below), whose sum is σ = 27478827878400. Its totient is φ = 12934211051520.

The previous prime is 20001033131173. The next prime is 20001033131249. The reversal of 20001033131223 is 32213133010002.

It is not a de Polignac number, because 20001033131223 - 2⁹ = 20001033130711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20001033131223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001031131223) 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 31 ways as a sum of consecutive naturals, for example, 5824353 + ... + 8597973.

It is an arithmetic number, because the mean of its divisors is an integer number (858713371200).

Almost surely, 2^{20001033131223} is an apocalyptic number.

20001033131223 is a deficient number, since it is larger than the sum of its proper divisors (7477794747177).

20001033131223 is a wasteful number, since it uses less digits than its factorization.

20001033131223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774127.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20001033131223 its reverse (32213133010002), we get a palindrome (52214166141225).

The spelling of 20001033131223 in words is "twenty trillion, one billion, thirty-three million, one hundred thirty-one thousand, two hundred twenty-three".