2499214721 has 2 divisors, whose sum is σ = 2499214722. Its totient is φ = 2499214720.

The previous prime is 2499214703. The next prime is 2499214733. The reversal of 2499214721 is 1274129942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2294410000 + 204804721 = 47900^2 + 14311^2 .

It is a cyclic number.

It is not a de Polignac number, because 2499214721 - 2⁶ = 2499214657 is a prime.

It is not a weakly prime, because it can be changed into another prime (2499214621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249607360 + 1249607361.

It is an arithmetic number, because the mean of its divisors is an integer number (1249607361).

Almost surely, 2^2499214721 is an apocalyptic number.

It is an amenable number.

2499214721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2499214721 is an equidigital number, since it uses as much as digits as its factorization.

2499214721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 2499214721 is about 49992.1465932400. The cubic root of 2499214721 is about 1357.0666884058.

The spelling of 2499214721 in words is "two billion, four hundred ninety-nine million, two hundred fourteen thousand, seven hundred twenty-one".