2001023300149 has 2 divisors, whose sum is σ = 2001023300150. Its totient is φ = 2001023300148.

The previous prime is 2001023300071. The next prime is 2001023300189. The reversal of 2001023300149 is 9410033201002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2000476441924 + 546858225 = 1414382^2 + 23385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001023300149 - 2²¹ = 2001021202997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001023300189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000511650074 + 1000511650075.

It is an arithmetic number, because the mean of its divisors is an integer number (1000511650075).

Almost surely, 2^{2001023300149} is an apocalyptic number.

It is an amenable number.

2001023300149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001023300149 is an equidigital number, since it uses as much as digits as its factorization.

2001023300149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 2001023300149 in words is "two trillion, one billion, twenty-three million, three hundred thousand, one hundred forty-nine".