21022221324241 has 4 divisors (see below), whose sum is σ = 21041280456192. Its totient is φ = 21003162192292.

The previous prime is 21022221324217. The next prime is 21022221324277. The reversal of 21022221324241 is 14242312222012.

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 21022221324241 - 2²¹ = 21022219227089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022221024241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9529564321 + ... + 9529566526.

It is an arithmetic number, because the mean of its divisors is an integer number (5260320114048).

Almost surely, 2^{21022221324241} is an apocalyptic number.

It is an amenable number.

21022221324241 is a deficient number, since it is larger than the sum of its proper divisors (19059131951).

21022221324241 is a wasteful number, since it uses less digits than its factorization.

21022221324241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19059131950.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21022221324241 its reverse (14242312222012), we get a palindrome (35264533546253).

The spelling of 21022221324241 in words is "twenty-one trillion, twenty-two billion, two hundred twenty-one million, three hundred twenty-four thousand, two hundred forty-one".