2301000021 has 16 divisors (see below), whose sum is σ = 3456904320. Its totient is φ = 1512393120.

The previous prime is 2301000001. The next prime is 2301000043. The reversal of 2301000021 is 1200001032.

It is a happy number.

It is not a de Polignac number, because 2301000021 - 2⁵ = 2300999989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2300999967 and 2301000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2301000001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598240 + ... + 602073.

It is an arithmetic number, because the mean of its divisors is an integer number (216056520).

Almost surely, 2^2301000021 is an apocalyptic number.

It is an amenable number.

2301000021 is a deficient number, since it is larger than the sum of its proper divisors (1155904299).

2301000021 is a wasteful number, since it uses less digits than its factorization.

2301000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200393 (or 1200387 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2301000021 is about 47968.7400397384. The cubic root of 2301000021 is about 1320.1974033285.

Adding to 2301000021 its reverse (1200001032), we get a palindrome (3501001053).

The spelling of 2301000021 in words is "two billion, three hundred one million, twenty-one", and thus it is an aban number.