11310100021 has 48 divisors (see below), whose sum is σ = 13251268800. Its totient is φ = 9630593280.

The previous prime is 11310100013. The next prime is 11310100027. The reversal of 11310100021 is 12000101311.

It is not a de Polignac number, because 11310100021 - 2³ = 11310100013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11310099980 and 11310100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11310100027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17162190 + ... + 17162848.

It is an arithmetic number, because the mean of its divisors is an integer number (276068100).

Almost surely, 2^11310100021 is an apocalyptic number.

11310100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11310100021 is a deficient number, since it is larger than the sum of its proper divisors (1941168779).

11310100021 is a wasteful number, since it uses less digits than its factorization.

11310100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11310100021 its reverse (12000101311), we get a palindrome (23310201332).

The spelling of 11310100021 in words is "eleven billion, three hundred ten million, one hundred thousand, twenty-one".