21101101327 has 2 divisors, whose sum is σ = 21101101328. Its totient is φ = 21101101326.

The previous prime is 21101101321. The next prime is 21101101349. The reversal of 21101101327 is 72310110112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21101101327 - 2²⁷ = 20966883599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101101321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550550663 + 10550550664.

It is an arithmetic number, because the mean of its divisors is an integer number (10550550664).

Almost surely, 2^21101101327 is an apocalyptic number.

21101101327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101101327 is an equidigital number, since it uses as much as digits as its factorization.

21101101327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 21101101327 its reverse (72310110112), we get a palindrome (93411211439).

The spelling of 21101101327 in words is "twenty-one billion, one hundred one million, one hundred one thousand, three hundred twenty-seven".