2453212121 has 2 divisors, whose sum is σ = 2453212122. Its totient is φ = 2453212120.

The previous prime is 2453212061. The next prime is 2453212123. The reversal of 2453212121 is 1212123542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2399922121 + 53290000 = 48989^2 + 7300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2453212121 - 2¹⁴ = 2453195737 is a prime.

Together with 2453212123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2453212123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1226606060 + 1226606061.

It is an arithmetic number, because the mean of its divisors is an integer number (1226606061).

Almost surely, 2^2453212121 is an apocalyptic number.

It is an amenable number.

2453212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2453212121 is an equidigital number, since it uses as much as digits as its factorization.

2453212121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 2453212121 is about 49529.9113768640. The cubic root of 2453212121 is about 1348.6886435573.

Adding to 2453212121 its reverse (1212123542), we get a palindrome (3665335663).

The spelling of 2453212121 in words is "two billion, four hundred fifty-three million, two hundred twelve thousand, one hundred twenty-one".