4001212091813 has 2 divisors, whose sum is σ = 4001212091814. Its totient is φ = 4001212091812.

The previous prime is 4001212091801. The next prime is 4001212091819. The reversal of 4001212091813 is 3181902121004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4001212091809 + 4 = 2000303^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001212091813 - 2⁴ = 4001212091797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4001212091813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001212091819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000606045906 + 2000606045907.

It is an arithmetic number, because the mean of its divisors is an integer number (2000606045907).

Almost surely, 2^{4001212091813} is an apocalyptic number.

It is an amenable number.

4001212091813 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001212091813 is an equidigital number, since it uses as much as digits as its factorization.

4001212091813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 4001212091813 in words is "four trillion, one billion, two hundred twelve million, ninety-one thousand, eight hundred thirteen".