11210310021 has 4 divisors (see below), whose sum is σ = 14947080032. Its totient is φ = 7473540012.

The previous prime is 11210309989. The next prime is 11210310047. The reversal of 11210310021 is 12001301211.

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 not a de Polignac number, because 11210310021 - 2⁵ = 11210309989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11210309979 and 11210310006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210310121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868385001 + ... + 1868385006.

It is an arithmetic number, because the mean of its divisors is an integer number (3736770008).

Almost surely, 2^11210310021 is an apocalyptic number.

It is an amenable number.

11210310021 is a deficient number, since it is larger than the sum of its proper divisors (3736770011).

11210310021 is an equidigital number, since it uses as much as digits as its factorization.

11210310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736770010.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11210310021 its reverse (12001301211), we get a palindrome (23211611232).

The spelling of 11210310021 in words is "eleven billion, two hundred ten million, three hundred ten thousand, twenty-one".