2103500278001 has 2 divisors, whose sum is σ = 2103500278002. Its totient is φ = 2103500278000.

The previous prime is 2103500277971. The next prime is 2103500278013. The reversal of 2103500278001 is 1008720053012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2085598105600 + 17902172401 = 1444160^2 + 133799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103500278001 - 2¹⁸ = 2103500015857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2103500272001) 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, 1051750139000 + 1051750139001.

It is an arithmetic number, because the mean of its divisors is an integer number (1051750139001).

Almost surely, 2^{2103500278001} is an apocalyptic number.

It is an amenable number.

2103500278001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103500278001 is an equidigital number, since it uses as much as digits as its factorization.

2103500278001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 2103500278001 in words is "two trillion, one hundred three billion, five hundred million, two hundred seventy-eight thousand, one".