20211231004003 has 8 divisors (see below), whose sum is σ = 21766197704048. Its totient is φ = 18656300964384.

The previous prime is 20211231003961. The next prime is 20211231004007. The reversal of 20211231004003 is 30040013211202.

It is a happy number.

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 20211231004003 - 2²¹ = 20211228906851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211231004007) 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, 8014725 + ... + 10230262.

It is an arithmetic number, because the mean of its divisors is an integer number (2720774713006).

Almost surely, 2^{20211231004003} is an apocalyptic number.

20211231004003 is a deficient number, since it is larger than the sum of its proper divisors (1554966700045).

20211231004003 is a wasteful number, since it uses less digits than its factorization.

20211231004003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18330213.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20211231004003 its reverse (30040013211202), we get a palindrome (50251244215205).

The spelling of 20211231004003 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-one million, four thousand, three".