11020000120021 has 4 divisors (see below), whose sum is σ = 11020042043500. Its totient is φ = 11019958196544.

The previous prime is 11020000119983. The next prime is 11020000120039. The reversal of 11020000120021 is 12002100002011.

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 534125643921 + 10485874476100 = 730839^2 + 3238190^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020000120021 - 2⁷ = 11020000119893 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 (11020000120421) 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, 20564946 + ... + 21094003.

It is an arithmetic number, because the mean of its divisors is an integer number (2755010510875).

Almost surely, 2^{11020000120021} is an apocalyptic number.

It is an amenable number.

11020000120021 is a deficient number, since it is larger than the sum of its proper divisors (41923479).

11020000120021 is an equidigital number, since it uses as much as digits as its factorization.

11020000120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41923478.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11020000120021 its reverse (12002100002011), we get a palindrome (23022100122032).

The spelling of 11020000120021 in words is "eleven trillion, twenty billion, one hundred twenty thousand, twenty-one".