22550020013 has 4 divisors (see below), whose sum is σ = 23327606940. Its totient is φ = 21772433088.

The previous prime is 22550020007. The next prime is 22550020069. The reversal of 22550020013 is 31002005522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31002005522 = 2 ⋅15501002761.

It can be written as a sum of positive squares in 2 ways, for example, as 12995544004 + 9554476009 = 113998^2 + 97747^2 .

It is a cyclic number.

It is not a de Polignac number, because 22550020013 - 2⁴ = 22550019997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550020613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388793420 + ... + 388793477.

It is an arithmetic number, because the mean of its divisors is an integer number (5831901735).

Almost surely, 2^22550020013 is an apocalyptic number.

It is an amenable number.

22550020013 is a deficient number, since it is larger than the sum of its proper divisors (777586927).

22550020013 is an equidigital number, since it uses as much as digits as its factorization.

22550020013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777586926.

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 22550020013 its reverse (31002005522), we get a palindrome (53552025535).

The spelling of 22550020013 in words is "twenty-two billion, five hundred fifty million, twenty thousand, thirteen".