20523132101 has 4 divisors (see below), whose sum is σ = 20524079052. Its totient is φ = 20522185152.

The previous prime is 20523132073. The next prime is 20523132103. The reversal of 20523132101 is 10123132502.

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 19358548225 + 1164583876 = 139135^2 + 34126^2 .

It is a cyclic number.

It is not a de Polignac number, because 20523132101 - 2³⁴ = 3343262917 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 (20523132103) 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, 440186 + ... + 484571.

It is an arithmetic number, because the mean of its divisors is an integer number (5131019763).

Almost surely, 2^20523132101 is an apocalyptic number.

It is an amenable number.

20523132101 is a deficient number, since it is larger than the sum of its proper divisors (946951).

20523132101 is an equidigital number, since it uses as much as digits as its factorization.

20523132101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946950.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 20523132101 its reverse (10123132502), we get a palindrome (30646264603).

The spelling of 20523132101 in words is "twenty billion, five hundred twenty-three million, one hundred thirty-two thousand, one hundred one".