22362421 has 4 divisors (see below), whose sum is σ = 22379500. Its totient is φ = 22345344.

The previous prime is 22362419. The next prime is 22362427. The reversal of 22362421 is 12426322.

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 2515396 + 19847025 = 1586^2 + 4455^2 .

It is a cyclic number.

It is not a de Polignac number, because 22362421 - 2¹ = 22362419 is a prime.

It is a super-3 number, since 3×22362421³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22362392 and 22362401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22362427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6396 + ... + 9253.

It is an arithmetic number, because the mean of its divisors is an integer number (5594875).

Almost surely, 2^22362421 is an apocalyptic number.

It is an amenable number.

22362421 is a deficient number, since it is larger than the sum of its proper divisors (17079).

22362421 is a wasteful number, since it uses less digits than its factorization.

22362421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17078.

The product of its digits is 1152, while the sum is 22.

The square root of 22362421 is about 4728.8921535599. The cubic root of 22362421 is about 281.7342238818.

Adding to 22362421 its reverse (12426322), we get a palindrome (34788743).

The spelling of 22362421 in words is "twenty-two million, three hundred sixty-two thousand, four hundred twenty-one".