910121002001 has 2 divisors, whose sum is σ = 910121002002. Its totient is φ = 910121002000.

The previous prime is 910121001961. The next prime is 910121002009. The reversal of 910121002001 is 100200121019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613966273600 + 296154728401 = 783560^2 + 544201^2 .

It is an emirp because it is prime and its reverse (100200121019) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-910121002001 is a prime.

It is not a weakly prime, because it can be changed into another prime (910121002009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455060501000 + 455060501001.

It is an arithmetic number, because the mean of its divisors is an integer number (455060501001).

Almost surely, 2^910121002001 is an apocalyptic number.

It is an amenable number.

910121002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

910121002001 is an equidigital number, since it uses as much as digits as its factorization.

910121002001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 910121002001 in words is "nine hundred ten billion, one hundred twenty-one million, two thousand, one".