11121011110021 has 8 divisors (see below), whose sum is σ = 11133124720704. Its totient is φ = 11108898282240.

The previous prime is 11121011109977. The next prime is 11121011110031. The reversal of 11121011110021 is 12001111012111.

11121011110021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121011110021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121011109983 and 11121011110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121011110031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30914016 + ... + 31271686.

It is an arithmetic number, because the mean of its divisors is an integer number (1391640590088).

Almost surely, 2^{11121011110021} is an apocalyptic number.

It is an amenable number.

11121011110021 is a deficient number, since it is larger than the sum of its proper divisors (12113610683).

11121011110021 is an equidigital number, since it uses as much as digits as its factorization.

11121011110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391451.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11121011110021 its reverse (12001111012111), we get a palindrome (23122122122132).

The spelling of 11121011110021 in words is "eleven trillion, one hundred twenty-one billion, eleven million, one hundred ten thousand, twenty-one".