2453201021 has 2 divisors, whose sum is σ = 2453201022. Its totient is φ = 2453201020.

The previous prime is 2453200987. The next prime is 2453201063. The reversal of 2453201021 is 1201023542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2431476100 + 21724921 = 49310^2 + 4661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2453201021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2453200984 and 2453201002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2453203021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1226600510 + 1226600511.

It is an arithmetic number, because the mean of its divisors is an integer number (1226600511).

Almost surely, 2^2453201021 is an apocalyptic number.

It is an amenable number.

2453201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2453201021 is an equidigital number, since it uses as much as digits as its factorization.

2453201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2453201021 is about 49529.7993232357. The cubic root of 2453201021 is about 1348.6866094260.

Adding to 2453201021 its reverse (1201023542), we get a palindrome (3654224563).

The spelling of 2453201021 in words is "two billion, four hundred fifty-three million, two hundred one thousand, twenty-one".