20132131213021 has 4 divisors (see below), whose sum is σ = 20132142123132. Its totient is φ = 20132120302912.

The previous prime is 20132131213003. The next prime is 20132131213039. The reversal of 20132131213021 is 12031213123102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (20132131213003) and next prime (20132131213039).

It can be written as a sum of positive squares in 2 ways, for example, as 16156139080900 + 3975992132121 = 4019470^2 + 1993989^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132131213021 - 2³⁵ = 20097771474653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20132131212983 and 20132131213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132131253021) 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, 1926220 + ... + 6631333.

It is an arithmetic number, because the mean of its divisors is an integer number (5033035530783).

Almost surely, 2^{20132131213021} is an apocalyptic number.

It is an amenable number.

20132131213021 is a deficient number, since it is larger than the sum of its proper divisors (10910111).

20132131213021 is an equidigital number, since it uses as much as digits as its factorization.

20132131213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10910110.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20132131213021 its reverse (12031213123102), we get a palindrome (32163344336123).

The spelling of 20132131213021 in words is "twenty trillion, one hundred thirty-two billion, one hundred thirty-one million, two hundred thirteen thousand, twenty-one".