21324220122041 has 4 divisors (see below), whose sum is σ = 21370476565284. Its totient is φ = 21277963678800.

The previous prime is 21324220121957. The next prime is 21324220122103. The reversal of 21324220122041 is 14022102242312.

It is a happy number.

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 6135826243600 + 15188393878441 = 2477060^2 + 3897229^2 .

It is a cyclic number.

It is not a de Polignac number, because 21324220122041 - 2¹⁸ = 21324219859897 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 21324220122041.

It is not an unprimeable number, because it can be changed into a prime (21324220122641) 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, 23128220930 + ... + 23128221851.

It is an arithmetic number, because the mean of its divisors is an integer number (5342619141321).

Almost surely, 2^{21324220122041} is an apocalyptic number.

It is an amenable number.

21324220122041 is a deficient number, since it is larger than the sum of its proper divisors (46256443243).

21324220122041 is an equidigital number, since it uses as much as digits as its factorization.

21324220122041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46256443242.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21324220122041 its reverse (14022102242312), we get a palindrome (35346322364353).

The spelling of 21324220122041 in words is "twenty-one trillion, three hundred twenty-four billion, two hundred twenty million, one hundred twenty-two thousand, forty-one".