22034021 has 4 divisors (see below), whose sum is σ = 22044000. Its totient is φ = 22024044.

The previous prime is 22034011. The next prime is 22034027. The reversal of 22034021 is 12043022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12043022 = 2 ⋅6021511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22034021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22033987 and 22034005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22034027) 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, 41 + ... + 6638.

It is an arithmetic number, because the mean of its divisors is an integer number (5511000).

Almost surely, 2^22034021 is an apocalyptic number.

It is an amenable number.

22034021 is a deficient number, since it is larger than the sum of its proper divisors (9979).

22034021 is an equidigital number, since it uses as much as digits as its factorization.

22034021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9978.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22034021 is about 4694.0410096206. The cubic root of 22034021 is about 280.3482953132.

Adding to 22034021 its reverse (12043022), we get a palindrome (34077043).

Subtracting from 22034021 its reverse (12043022), we obtain a palindrome (9990999).

The spelling of 22034021 in words is "twenty-two million, thirty-four thousand, twenty-one".