11242020021 has 16 divisors (see below), whose sum is σ = 15052060800. Its totient is φ = 7463389248.

The previous prime is 11242020019. The next prime is 11242020047. The reversal of 11242020021 is 12002024211.

It is not a de Polignac number, because 11242020021 - 2¹ = 11242020019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11242020821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808395 + ... + 822183.

It is an arithmetic number, because the mean of its divisors is an integer number (940753800).

Almost surely, 2^11242020021 is an apocalyptic number.

It is an amenable number.

11242020021 is a deficient number, since it is larger than the sum of its proper divisors (3810040779).

11242020021 is a wasteful number, since it uses less digits than its factorization.

11242020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14908.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11242020021 its reverse (12002024211), we get a palindrome (23244044232).

The spelling of 11242020021 in words is "eleven billion, two hundred forty-two million, twenty thousand, twenty-one".