109359221 has 2 divisors, whose sum is σ = 109359222. Its totient is φ = 109359220.

The previous prime is 109359197. The next prime is 109359247. The reversal of 109359221 is 122953901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76755121 + 32604100 = 8761^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 109359221 - 2¹⁴ = 109342837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109359251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54679610 + 54679611.

It is an arithmetic number, because the mean of its divisors is an integer number (54679611).

Almost surely, 2^109359221 is an apocalyptic number.

It is an amenable number.

109359221 is a deficient number, since it is larger than the sum of its proper divisors (1).

109359221 is an equidigital number, since it uses as much as digits as its factorization.

109359221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 109359221 is about 10457.4959239772. The cubic root of 109359221 is about 478.2097971462.

The spelling of 109359221 in words is "one hundred nine million, three hundred fifty-nine thousand, two hundred twenty-one".