109524809021 has 2 divisors, whose sum is σ = 109524809022. Its totient is φ = 109524809020.

The previous prime is 109524808997. The next prime is 109524809039. The reversal of 109524809021 is 120908425901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66223360921 + 43301448100 = 257339^2 + 208090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109524809021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 109524809021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109524809041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54762404510 + 54762404511.

It is an arithmetic number, because the mean of its divisors is an integer number (54762404511).

Almost surely, 2^109524809021 is an apocalyptic number.

It is an amenable number.

109524809021 is a deficient number, since it is larger than the sum of its proper divisors (1).

109524809021 is an equidigital number, since it uses as much as digits as its factorization.

109524809021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 109524809021 in words is "one hundred nine billion, five hundred twenty-four million, eight hundred nine thousand, twenty-one".