11422021 has 16 divisors (see below), whose sum is σ = 13083840. Its totient is φ = 9884160.

The previous prime is 11422013. The next prime is 11422031. The reversal of 11422021 is 12022411.

It is a happy number.

It is not a de Polignac number, because 11422021 - 2³ = 11422013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11421992 and 11422010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11422031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32181 + ... + 32533.

It is an arithmetic number, because the mean of its divisors is an integer number (817740).

Almost surely, 2^11422021 is an apocalyptic number.

It is an amenable number.

11422021 is a deficient number, since it is larger than the sum of its proper divisors (1661819).

11422021 is a wasteful number, since it uses less digits than its factorization.

11422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 11422021 is about 3379.6480586002. The cubic root of 11422021 is about 225.2065329941.

Adding to 11422021 its reverse (12022411), we get a palindrome (23444432).

The spelling of 11422021 in words is "eleven million, four hundred twenty-two thousand, twenty-one".