27321121 has 2 divisors, whose sum is σ = 27321122. Its totient is φ = 27321120.

The previous prime is 27321101. The next prime is 27321127. The reversal of 27321121 is 12112372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25644096 + 1677025 = 5064^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 27321121 - 2⁵ = 27321089 is a prime.

It is not a weakly prime, because it can be changed into another prime (27321127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13660560 + 13660561.

It is an arithmetic number, because the mean of its divisors is an integer number (13660561).

Almost surely, 2^27321121 is an apocalyptic number.

It is an amenable number.

27321121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27321121 is an equidigital number, since it uses as much as digits as its factorization.

27321121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 19.

The square root of 27321121 is about 5226.9609717311. The cubic root of 27321121 is about 301.1846528714.

Adding to 27321121 its reverse (12112372), we get a palindrome (39433493).

The spelling of 27321121 in words is "twenty-seven million, three hundred twenty-one thousand, one hundred twenty-one".