10040108921 has 2 divisors, whose sum is σ = 10040108922. Its totient is φ = 10040108920.

The previous prime is 10040108899. The next prime is 10040108963. The reversal of 10040108921 is 12980104001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9170743696 + 869365225 = 95764^2 + 29485^2 .

It is a cyclic number.

It is not a de Polignac number, because 10040108921 - 2¹⁰ = 10040107897 is a prime.

It is not a weakly prime, because it can be changed into another prime (10040138921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5020054460 + 5020054461.

It is an arithmetic number, because the mean of its divisors is an integer number (5020054461).

Almost surely, 2^10040108921 is an apocalyptic number.

It is an amenable number.

10040108921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10040108921 is an equidigital number, since it uses as much as digits as its factorization.

10040108921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 10040108921 in words is "ten billion, forty million, one hundred eight thousand, nine hundred twenty-one".