11020011220021 has 4 divisors (see below), whose sum is σ = 11133619583212. Its totient is φ = 10906402856832.

The previous prime is 11020011220019. The next prime is 11020011220037. The reversal of 11020011220021 is 12002211002011.

11020011220021 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 6177859380900 + 4842151839121 = 2485530^2 + 2200489^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020011220021 - 2¹ = 11020011220019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020011219983 and 11020011220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020011220921) 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, 56804181450 + ... + 56804181643.

It is an arithmetic number, because the mean of its divisors is an integer number (2783404895803).

Almost surely, 2^{11020011220021} is an apocalyptic number.

It is an amenable number.

11020011220021 is a deficient number, since it is larger than the sum of its proper divisors (113608363191).

11020011220021 is an equidigital number, since it uses as much as digits as its factorization.

11020011220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113608363190.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11020011220021 its reverse (12002211002011), we get a palindrome (23022222222032).

The spelling of 11020011220021 in words is "eleven trillion, twenty billion, eleven million, two hundred twenty thousand, twenty-one".