109122661 has 2 divisors, whose sum is σ = 109122662. Its totient is φ = 109122660.

The previous prime is 109122653. The next prime is 109122721. The reversal of 109122661 is 166221901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62964225 + 46158436 = 7935^2 + 6794^2 .

It is a cyclic number.

It is not a de Polignac number, because 109122661 - 2³ = 109122653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109122061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54561330 + 54561331.

It is an arithmetic number, because the mean of its divisors is an integer number (54561331).

Almost surely, 2^109122661 is an apocalyptic number.

It is an amenable number.

109122661 is a deficient number, since it is larger than the sum of its proper divisors (1).

109122661 is an equidigital number, since it uses as much as digits as its factorization.

109122661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 109122661 is about 10446.1792536793. The cubic root of 109122661 is about 477.8647356275.

The spelling of 109122661 in words is "one hundred nine million, one hundred twenty-two thousand, six hundred sixty-one".