20522121223055 has 4 divisors (see below), whose sum is σ = 24626545467672. Its totient is φ = 16417696978440.

The previous prime is 20522121223049. The next prime is 20522121223081. The reversal of 20522121223055 is 55032212122502.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20522121223055 - 2¹⁶ = 20522121157519 is a prime.

It is a super-3 number, since 3×20522121223055³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052212122301 + ... + 2052212122310.

It is an arithmetic number, because the mean of its divisors is an integer number (6156636366918).

Almost surely, 2^{20522121223055} is an apocalyptic number.

20522121223055 is a deficient number, since it is larger than the sum of its proper divisors (4104424244617).

20522121223055 is an equidigital number, since it uses as much as digits as its factorization.

20522121223055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104424244616.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 20522121223055 its reverse (55032212122502), we get a palindrome (75554333345557).

The spelling of 20522121223055 in words is "twenty trillion, five hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-three thousand, fifty-five".