2301230021 has 2 divisors, whose sum is σ = 2301230022. Its totient is φ = 2301230020.

The previous prime is 2301230003. The next prime is 2301230023. The reversal of 2301230021 is 1200321032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1405425121 + 895804900 = 37489^2 + 29930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2301230021 - 2¹⁰ = 2301228997 is a prime.

Together with 2301230023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2301229978 and 2301230005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2301230023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1150615010 + 1150615011.

It is an arithmetic number, because the mean of its divisors is an integer number (1150615011).

Almost surely, 2^2301230021 is an apocalyptic number.

It is an amenable number.

2301230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2301230021 is an equidigital number, since it uses as much as digits as its factorization.

2301230021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2301230021 is about 47971.1373744672. The cubic root of 2301230021 is about 1320.2413893177.

Adding to 2301230021 its reverse (1200321032), we get a palindrome (3501551053).

The spelling of 2301230021 in words is "two billion, three hundred one million, two hundred thirty thousand, twenty-one".