11142210020021 has 4 divisors (see below), whose sum is σ = 11148197238444. Its totient is φ = 11136222801600.

The previous prime is 11142210019921. The next prime is 11142210020027. The reversal of 11142210020021 is 12002001224111.

11142210020021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5592463495921 + 5549746524100 = 2364839^2 + 2355790^2 .

It is a cyclic number.

It is not a de Polignac number, because 11142210020021 - 2²⁶ = 11142142911157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142210020027) 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, 2993606420 + ... + 2993610141.

It is an arithmetic number, because the mean of its divisors is an integer number (2787049309611).

Almost surely, 2^{11142210020021} is an apocalyptic number.

It is an amenable number.

11142210020021 is a deficient number, since it is larger than the sum of its proper divisors (5987218423).

11142210020021 is an equidigital number, since it uses as much as digits as its factorization.

11142210020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987218422.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11142210020021 its reverse (12002001224111), we get a palindrome (23144211244132).

The spelling of 11142210020021 in words is "eleven trillion, one hundred forty-two billion, two hundred ten million, twenty thousand, twenty-one".