21021201002027 has 2 divisors, whose sum is σ = 21021201002028. Its totient is φ = 21021201002026.

The previous prime is 21021201001993. The next prime is 21021201002111. The reversal of 21021201002027 is 72020010212012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21021201002027 - 2³⁰ = 21020127260203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21021201302027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510600501013 + 10510600501014.

It is an arithmetic number, because the mean of its divisors is an integer number (10510600501014).

Almost surely, 2^{21021201002027} is an apocalyptic number.

21021201002027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21021201002027 is an equidigital number, since it uses as much as digits as its factorization.

21021201002027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 21021201002027 its reverse (72020010212012), we get a palindrome (93041211214039).

The spelling of 21021201002027 in words is "twenty-one trillion, twenty-one billion, two hundred one million, two thousand, twenty-seven".