20310211021 has 8 divisors (see below), whose sum is σ = 20346139424. Its totient is φ = 20274306480.

The previous prime is 20310211013. The next prime is 20310211039. The reversal of 20310211021 is 12011201302.

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 20310211021 - 2³ = 20310211013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20310210992 and 20310211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310218021) 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 7 ways as a sum of consecutive naturals, for example, 2701750 + ... + 2709256.

It is an arithmetic number, because the mean of its divisors is an integer number (2543267428).

Almost surely, 2^20310211021 is an apocalyptic number.

It is an amenable number.

20310211021 is a deficient number, since it is larger than the sum of its proper divisors (35928403).

20310211021 is an equidigital number, since it uses as much as digits as its factorization.

20310211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11931.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20310211021 its reverse (12011201302), we get a palindrome (32321412323).

The spelling of 20310211021 in words is "twenty billion, three hundred ten million, two hundred eleven thousand, twenty-one".