20442410131321 has 4 divisors (see below), whose sum is σ = 20442608114832. Its totient is φ = 20442212147812.

The previous prime is 20442410131313. The next prime is 20442410131327. The reversal of 20442410131321 is 12313101424402.

It is a happy number.

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 20442410131321 - 2³ = 20442410131313 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 20442410131321.

It is not an unprimeable number, because it can be changed into a prime (20442410131327) 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, 98836795 + ... + 99043408.

It is an arithmetic number, because the mean of its divisors is an integer number (5110652028708).

Almost surely, 2^{20442410131321} is an apocalyptic number.

It is an amenable number.

20442410131321 is a deficient number, since it is larger than the sum of its proper divisors (197983511).

20442410131321 is a wasteful number, since it uses less digits than its factorization.

20442410131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197983510.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 20442410131321 its reverse (12313101424402), we get a palindrome (32755511555723).

The spelling of 20442410131321 in words is "twenty trillion, four hundred forty-two billion, four hundred ten million, one hundred thirty-one thousand, three hundred twenty-one".