21243000131411 has 2 divisors, whose sum is σ = 21243000131412. Its totient is φ = 21243000131410.

The previous prime is 21243000131407. The next prime is 21243000131417. The reversal of 21243000131411 is 11413100034212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21243000131411 - 2² = 21243000131407 is a prime.

It is not a weakly prime, because it can be changed into another prime (21243000131417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10621500065705 + 10621500065706.

It is an arithmetic number, because the mean of its divisors is an integer number (10621500065706).

Almost surely, 2^{21243000131411} is an apocalyptic number.

21243000131411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21243000131411 is an equidigital number, since it uses as much as digits as its factorization.

21243000131411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21243000131411 its reverse (11413100034212), we get a palindrome (32656100165623).

The spelling of 21243000131411 in words is "twenty-one trillion, two hundred forty-three billion, one hundred thirty-one thousand, four hundred eleven".