20522847101 has 4 divisors (see below), whose sum is σ = 20543187900. Its totient is φ = 20502506304.

The previous prime is 20522847089. The next prime is 20522847157. The reversal of 20522847101 is 10174822502.

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 12906096025 + 7616751076 = 113605^2 + 87274^2 .

It is a cyclic number.

It is not a de Polignac number, because 20522847101 - 2³⁴ = 3342977917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522844101) 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, 10168886 + ... + 10170903.

It is an arithmetic number, because the mean of its divisors is an integer number (5135796975).

Almost surely, 2^20522847101 is an apocalyptic number.

It is an amenable number.

20522847101 is a deficient number, since it is larger than the sum of its proper divisors (20340799).

20522847101 is a wasteful number, since it uses less digits than its factorization.

20522847101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20340798.

The product of its (nonzero) digits is 8960, while the sum is 32.

The spelling of 20522847101 in words is "twenty billion, five hundred twenty-two million, eight hundred forty-seven thousand, one hundred one".