21109600027 has 2 divisors, whose sum is σ = 21109600028. Its totient is φ = 21109600026.

The previous prime is 21109600003. The next prime is 21109600093. The reversal of 21109600027 is 72000690112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21109600027 - 2²⁷ = 20975382299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21109599968 and 21109600004.

It is not a weakly prime, because it can be changed into another prime (21109600427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10554800013 + 10554800014.

It is an arithmetic number, because the mean of its divisors is an integer number (10554800014).

Almost surely, 2^21109600027 is an apocalyptic number.

21109600027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21109600027 is an equidigital number, since it uses as much as digits as its factorization.

21109600027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The spelling of 21109600027 in words is "twenty-one billion, one hundred nine million, six hundred thousand, twenty-seven".