21134301431213 has 4 divisors (see below), whose sum is σ = 21139677751968. Its totient is φ = 21128925110460.

The previous prime is 21134301431129. The next prime is 21134301431237. The reversal of 21134301431213 is 31213410343112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21134301431213 - 2¹⁴ = 21134301414829 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 (21134301431273) 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, 2688154481 + ... + 2688162342.

It is an arithmetic number, because the mean of its divisors is an integer number (5284919437992).

Almost surely, 2^{21134301431213} is an apocalyptic number.

It is an amenable number.

21134301431213 is a deficient number, since it is larger than the sum of its proper divisors (5376320755).

21134301431213 is an equidigital number, since it uses as much as digits as its factorization.

21134301431213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376320754.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 21134301431213 its reverse (31213410343112), we get a palindrome (52347711774325).

The spelling of 21134301431213 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred one million, four hundred thirty-one thousand, two hundred thirteen".