21120132413 has 2 divisors, whose sum is σ = 21120132414. Its totient is φ = 21120132412.

The previous prime is 21120132403. The next prime is 21120132433. The reversal of 21120132413 is 31423102112.

It is an a-pointer prime, because the next prime (21120132433) can be obtained adding 21120132413 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18612326329 + 2507806084 = 136427^2 + 50078^2 .

It is a cyclic number.

It is not a de Polignac number, because 21120132413 - 2⁶ = 21120132349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21120132403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560066206 + 10560066207.

It is an arithmetic number, because the mean of its divisors is an integer number (10560066207).

Almost surely, 2^21120132413 is an apocalyptic number.

It is an amenable number.

21120132413 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120132413 is an equidigital number, since it uses as much as digits as its factorization.

21120132413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21120132413 its reverse (31423102112), we get a palindrome (52543234525).

The spelling of 21120132413 in words is "twenty-one billion, one hundred twenty million, one hundred thirty-two thousand, four hundred thirteen".