21444144131411 has 2 divisors, whose sum is σ = 21444144131412. Its totient is φ = 21444144131410.

The previous prime is 21444144131393. The next prime is 21444144131429. The reversal of 21444144131411 is 11413144144412.

It is a balanced prime because it is at equal distance from previous prime (21444144131393) and next prime (21444144131429).

It is a cyclic number.

It is not a de Polignac number, because 21444144131411 - 2¹⁴ = 21444144115027 is a prime.

It is not a weakly prime, because it can be changed into another prime (21444144131441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10722072065705 + 10722072065706.

It is an arithmetic number, because the mean of its divisors is an integer number (10722072065706).

Almost surely, 2^{21444144131411} is an apocalyptic number.

21444144131411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21444144131411 is an equidigital number, since it uses as much as digits as its factorization.

21444144131411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24576, while the sum is 35.

Adding to 21444144131411 its reverse (11413144144412), we get a palindrome (32857288275823).

The spelling of 21444144131411 in words is "twenty-one trillion, four hundred forty-four billion, one hundred forty-four million, one hundred thirty-one thousand, four hundred eleven".