213130432041421 has 2 divisors, whose sum is σ = 213130432041422. Its totient is φ = 213130432041420.

The previous prime is 213130432041413. The next prime is 213130432041467. The reversal of 213130432041421 is 124140234031312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109376854638921 + 103753577402500 = 10458339^2 + 10185950^2 .

It is a cyclic number.

It is not a de Polignac number, because 213130432041421 - 2³ = 213130432041413 is a prime.

It is a super-3 number, since 3×213130432041421³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213130432041491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106565216020710 + 106565216020711.

It is an arithmetic number, because the mean of its divisors is an integer number (106565216020711).

Almost surely, 2^{213130432041421} is an apocalyptic number.

It is an amenable number.

213130432041421 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130432041421 is an equidigital number, since it uses as much as digits as its factorization.

213130432041421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 213130432041421 its reverse (124140234031312), we get a palindrome (337270666072733).

The spelling of 213130432041421 in words is "two hundred thirteen trillion, one hundred thirty billion, four hundred thirty-two million, forty-one thousand, four hundred twenty-one".