2001001000133 has 2 divisors, whose sum is σ = 2001001000134. Its totient is φ = 2001001000132.

The previous prime is 2001001000121. The next prime is 2001001000153. The reversal of 2001001000133 is 3310001001002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1377332265604 + 623668734529 = 1173598^2 + 789727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001001000133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001001000153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000500500066 + 1000500500067.

It is an arithmetic number, because the mean of its divisors is an integer number (1000500500067).

Almost surely, 2^{2001001000133} is an apocalyptic number.

It is an amenable number.

2001001000133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001001000133 is an equidigital number, since it uses as much as digits as its factorization.

2001001000133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 2001001000133 its reverse (3310001001002), we get a palindrome (5311002001135).

The spelling of 2001001000133 in words is "two trillion, one billion, one million, one hundred thirty-three", and thus it is an aban number.