109600021 has 2 divisors, whose sum is σ = 109600022. Its totient is φ = 109600020.

The previous prime is 109599979. The next prime is 109600061. The reversal of 109600021 is 120006901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78127921 + 31472100 = 8839^2 + 5610^2 .

It is a cyclic number.

It is not a de Polignac number, because 109600021 - 2¹¹ = 109597973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109600061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54800010 + 54800011.

It is an arithmetic number, because the mean of its divisors is an integer number (54800011).

Almost surely, 2^109600021 is an apocalyptic number.

It is an amenable number.

109600021 is a deficient number, since it is larger than the sum of its proper divisors (1).

109600021 is an equidigital number, since it uses as much as digits as its factorization.

109600021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 109600021 is about 10469.0028656028. The cubic root of 109600021 is about 478.5605327076.

Adding to 109600021 its reverse (120006901), we get a palindrome (229606922).

The spelling of 109600021 in words is "one hundred nine million, six hundred thousand, twenty-one".