11102021110021 has 4 divisors (see below), whose sum is σ = 11151805958272. Its totient is φ = 11052236261772.

The previous prime is 11102021110001. The next prime is 11102021110067. The reversal of 11102021110021 is 12001112020111.

It is a happy number.

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 11102021110021 - 2¹¹ = 11102021107973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102021109983 and 11102021110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102021110001) 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, 24892423791 + ... + 24892424236.

It is an arithmetic number, because the mean of its divisors is an integer number (2787951489568).

Almost surely, 2^{11102021110021} is an apocalyptic number.

It is an amenable number.

11102021110021 is a deficient number, since it is larger than the sum of its proper divisors (49784848251).

11102021110021 is an equidigital number, since it uses as much as digits as its factorization.

11102021110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49784848250.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11102021110021 its reverse (12001112020111), we get a palindrome (23103133130132).

The spelling of 11102021110021 in words is "eleven trillion, one hundred two billion, twenty-one million, one hundred ten thousand, twenty-one".