11113022021 has 4 divisors (see below), whose sum is σ = 11223052044. Its totient is φ = 11002992000.

The previous prime is 11113022003. The next prime is 11113022057. The reversal of 11113022021 is 12022031111.

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 8288099521 + 2824922500 = 91039^2 + 53150^2 .

It is a cyclic number.

It is not a de Polignac number, because 11113022021 - 2¹⁴ = 11113005637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11113021987 and 11113022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113028021) 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, 55014860 + ... + 55015061.

It is an arithmetic number, because the mean of its divisors is an integer number (2805763011).

Almost surely, 2^11113022021 is an apocalyptic number.

It is an amenable number.

11113022021 is a deficient number, since it is larger than the sum of its proper divisors (110030023).

11113022021 is a wasteful number, since it uses less digits than its factorization.

11113022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110030022.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11113022021 its reverse (12022031111), we get a palindrome (23135053132).

The spelling of 11113022021 in words is "eleven billion, one hundred thirteen million, twenty-two thousand, twenty-one".