109725122 has 16 divisors (see below), whose sum is σ = 177948792. Its totient is φ = 50442240.

The previous prime is 109725113. The next prime is 109725127. The reversal of 109725122 is 221527901.

It can be written as a sum of positive squares in 4 ways, for example, as 74666881 + 35058241 = 8641^2 + 5921^2 .

It is not an unprimeable number, because it can be changed into a prime (109725127) 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 in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 14892.

Almost surely, 2^109725122 is an apocalyptic number.

109725122 is a deficient number, since it is larger than the sum of its proper divisors (68223670).

109725122 is a wasteful number, since it uses less digits than its factorization.

109725122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16693.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 109725122 is about 10474.9759904259. The cubic root of 109725122 is about 478.7425449509.

The spelling of 109725122 in words is "one hundred nine million, seven hundred twenty-five thousand, one hundred twenty-two".