20110312303021 has 4 divisors (see below), whose sum is σ = 20174975686944. Its totient is φ = 20045648919100.

The previous prime is 20110312303007. The next prime is 20110312303111. The reversal of 20110312303021 is 12030321301102.

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 not a de Polignac number, because 20110312303021 - 2¹¹ = 20110312300973 is a prime.

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 20110312303021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110312303001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32331691495 + ... + 32331692116.

It is an arithmetic number, because the mean of its divisors is an integer number (5043743921736).

Almost surely, 2^{20110312303021} is an apocalyptic number.

It is an amenable number.

20110312303021 is a deficient number, since it is larger than the sum of its proper divisors (64663383923).

20110312303021 is an equidigital number, since it uses as much as digits as its factorization.

20110312303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64663383922.

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

Adding to 20110312303021 its reverse (12030321301102), we get a palindrome (32140633604123).

The spelling of 20110312303021 in words is "twenty trillion, one hundred ten billion, three hundred twelve million, three hundred three thousand, twenty-one".