88130221 has 2 divisors, whose sum is σ = 88130222. Its totient is φ = 88130220.

The previous prime is 88130213. The next prime is 88130233. The reversal of 88130221 is 12203188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72488196 + 15642025 = 8514^2 + 3955^2 .

It is a cyclic number.

It is not a de Polignac number, because 88130221 - 2³ = 88130213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88130201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44065110 + 44065111.

It is an arithmetic number, because the mean of its divisors is an integer number (44065111).

Almost surely, 2^88130221 is an apocalyptic number.

It is an amenable number.

88130221 is a deficient number, since it is larger than the sum of its proper divisors (1).

88130221 is an equidigital number, since it uses as much as digits as its factorization.

88130221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 88130221 is about 9387.7697564438. The cubic root of 88130221 is about 445.0153106713.

The spelling of 88130221 in words is "eighty-eight million, one hundred thirty thousand, two hundred twenty-one".