20522205106 has 8 divisors (see below), whose sum is σ = 33151254444. Its totient is φ = 9471786960.

The previous prime is 20522205073. The next prime is 20522205107. The reversal of 20522205106 is 60150222502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14942862081 + 5579343025 = 122241^2 + 74695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20522205107) 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, 394657765 + ... + 394657816.

Almost surely, 2^20522205106 is an apocalyptic number.

20522205106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20522205106 is a deficient number, since it is larger than the sum of its proper divisors (12629049338).

20522205106 is a wasteful number, since it uses less digits than its factorization.

20522205106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789315596.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 20522205106 its reverse (60150222502), we get a palindrome (80672427608).

The spelling of 20522205106 in words is "twenty billion, five hundred twenty-two million, two hundred five thousand, one hundred six".