20211001233013 has 4 divisors (see below), whose sum is σ = 20291523150528. Its totient is φ = 20130479315500.

The previous prime is 20211001232887. The next prime is 20211001233061. The reversal of 20211001233013 is 31033210011202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211001233013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211001233713) 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 3 ways as a sum of consecutive naturals, for example, 40260958381 + ... + 40260958882.

It is an arithmetic number, because the mean of its divisors is an integer number (5072880787632).

Almost surely, 2^{20211001233013} is an apocalyptic number.

It is an amenable number.

20211001233013 is a deficient number, since it is larger than the sum of its proper divisors (80521917515).

20211001233013 is an equidigital number, since it uses as much as digits as its factorization.

20211001233013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80521917514.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20211001233013 its reverse (31033210011202), we get a palindrome (51244211244215).

The spelling of 20211001233013 in words is "twenty trillion, two hundred eleven billion, one million, two hundred thirty-three thousand, thirteen".