21342001027 has 2 divisors, whose sum is σ = 21342001028. Its totient is φ = 21342001026.

The previous prime is 21342001007. The next prime is 21342001039. The reversal of 21342001027 is 72010024312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21342001027 - 2⁷ = 21342000899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21342000989 and 21342001007.

It is not a weakly prime, because it can be changed into another prime (21342001007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671000513 + 10671000514.

It is an arithmetic number, because the mean of its divisors is an integer number (10671000514).

Almost surely, 2^21342001027 is an apocalyptic number.

21342001027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342001027 is an equidigital number, since it uses as much as digits as its factorization.

21342001027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 21342001027 its reverse (72010024312), we get a palindrome (93352025339).

The spelling of 21342001027 in words is "twenty-one billion, three hundred forty-two million, one thousand, twenty-seven".