3999011202001 has 2 divisors, whose sum is σ = 3999011202002. Its totient is φ = 3999011202000.

The previous prime is 3999011201993. The next prime is 3999011202019. The reversal of 3999011202001 is 1002021109993.

It is a happy number.

3999011202001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3830537894976 + 168473307025 = 1957176^2 + 410455^2 .

It is an emirp because it is prime and its reverse (1002021109993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3999011202001 - 2³ = 3999011201993 is a prime.

It is not a weakly prime, because it can be changed into another prime (3999011202031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999505601000 + 1999505601001.

It is an arithmetic number, because the mean of its divisors is an integer number (1999505601001).

Almost surely, 2^{3999011202001} is an apocalyptic number.

It is an amenable number.

3999011202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

3999011202001 is an equidigital number, since it uses as much as digits as its factorization.

3999011202001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 3999011202001 in words is "three trillion, nine hundred ninety-nine billion, eleven million, two hundred two thousand, one".