109943221 has 2 divisors, whose sum is σ = 109943222. Its totient is φ = 109943220.

The previous prime is 109943209. The next prime is 109943257. The reversal of 109943221 is 122349901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92428996 + 17514225 = 9614^2 + 4185^2 .

It is a cyclic number.

It is not a de Polignac number, because 109943221 - 2⁵ = 109943189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109943261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54971610 + 54971611.

It is an arithmetic number, because the mean of its divisors is an integer number (54971611).

Almost surely, 2^109943221 is an apocalyptic number.

It is an amenable number.

109943221 is a deficient number, since it is larger than the sum of its proper divisors (1).

109943221 is an equidigital number, since it uses as much as digits as its factorization.

109943221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 109943221 is about 10485.3812996953. The cubic root of 109943221 is about 479.0595315093.

The spelling of 109943221 in words is "one hundred nine million, nine hundred forty-three thousand, two hundred twenty-one".