22060421 has 4 divisors (see below), whose sum is σ = 22142700. Its totient is φ = 21978144.

The previous prime is 22060411. The next prime is 22060429. The reversal of 22060421 is 12406022.

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 11730625 + 10329796 = 3425^2 + 3214^2 .

It is a cyclic number.

It is not a de Polignac number, because 22060421 - 2¹⁰ = 22059397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22060421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22060429) 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 3 ways as a sum of consecutive naturals, for example, 40736 + ... + 41273.

It is an arithmetic number, because the mean of its divisors is an integer number (5535675).

Almost surely, 2^22060421 is an apocalyptic number.

It is an amenable number.

22060421 is a deficient number, since it is larger than the sum of its proper divisors (82279).

22060421 is an equidigital number, since it uses as much as digits as its factorization.

22060421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82278.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22060421 is about 4696.8522437905. The cubic root of 22060421 is about 280.4602167982.

Adding to 22060421 its reverse (12406022), we get a palindrome (34466443).

The spelling of 22060421 in words is "twenty-two million, sixty thousand, four hundred twenty-one".