2454548216221 has 2 divisors, whose sum is σ = 2454548216222. Its totient is φ = 2454548216220.

The previous prime is 2454548216209. The next prime is 2454548216357. The reversal of 2454548216221 is 1226128454542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1809119151225 + 645429064996 = 1345035^2 + 803386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2454548216221 - 2⁷ = 2454548216093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2454548246221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227274108110 + 1227274108111.

It is an arithmetic number, because the mean of its divisors is an integer number (1227274108111).

Almost surely, 2^{2454548216221} is an apocalyptic number.

It is an amenable number.

2454548216221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2454548216221 is an equidigital number, since it uses as much as digits as its factorization.

2454548216221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1228800, while the sum is 46.

The spelling of 2454548216221 in words is "two trillion, four hundred fifty-four billion, five hundred forty-eight million, two hundred sixteen thousand, two hundred twenty-one".