21000432133027 has 2 divisors, whose sum is σ = 21000432133028. Its totient is φ = 21000432133026.

The previous prime is 21000432133001. The next prime is 21000432133033. The reversal of 21000432133027 is 72033123400012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000432133027 - 2¹⁵ = 21000432100259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21000432132986 and 21000432133004.

It is not a weakly prime, because it can be changed into another prime (21000432133427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500216066513 + 10500216066514.

It is an arithmetic number, because the mean of its divisors is an integer number (10500216066514).

Almost surely, 2^{21000432133027} is an apocalyptic number.

21000432133027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000432133027 is an equidigital number, since it uses as much as digits as its factorization.

21000432133027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 21000432133027 its reverse (72033123400012), we get a palindrome (93033555533039).

The spelling of 21000432133027 in words is "twenty-one trillion, four hundred thirty-two million, one hundred thirty-three thousand, twenty-seven".