27220129 has 2 divisors, whose sum is σ = 27220130. Its totient is φ = 27220128.

The previous prime is 27220121. The next prime is 27220147. The reversal of 27220129 is 92102272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 4941729 = 4720^2 + 2223^2 .

It is a cyclic number.

It is not a de Polignac number, because 27220129 - 2³ = 27220121 is a prime.

It is not a weakly prime, because it can be changed into another prime (27220121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13610064 + 13610065.

It is an arithmetic number, because the mean of its divisors is an integer number (13610065).

Almost surely, 2^27220129 is an apocalyptic number.

It is an amenable number.

27220129 is a deficient number, since it is larger than the sum of its proper divisors (1).

27220129 is an equidigital number, since it uses as much as digits as its factorization.

27220129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 27220129 is about 5217.2913470497. The cubic root of 27220129 is about 300.8130869007.

The spelling of 27220129 in words is "twenty-seven million, two hundred twenty thousand, one hundred twenty-nine".