22015321441 has 4 divisors (see below), whose sum is σ = 22023860400. Its totient is φ = 22006782484.

The previous prime is 22015321423. The next prime is 22015321463. The reversal of 22015321441 is 14412351022.

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.

It is a cyclic number.

It is not a de Polignac number, because 22015321441 - 2¹³ = 22015313249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22015361441) 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, 4265611 + ... + 4270768.

It is an arithmetic number, because the mean of its divisors is an integer number (5505965100).

Almost surely, 2^22015321441 is an apocalyptic number.

It is an amenable number.

22015321441 is a deficient number, since it is larger than the sum of its proper divisors (8538959).

22015321441 is an equidigital number, since it uses as much as digits as its factorization.

22015321441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8538958.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 22015321441 its reverse (14412351022), we get a palindrome (36427672463).

The spelling of 22015321441 in words is "twenty-two billion, fifteen million, three hundred twenty-one thousand, four hundred forty-one".