2247046721 has 2 divisors, whose sum is σ = 2247046722. Its totient is φ = 2247046720.

The previous prime is 2247046693. The next prime is 2247046771. The reversal of 2247046721 is 1276407422.

2247046721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2231523121 + 15523600 = 47239^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2247046721 - 2¹⁴ = 2247030337 is a prime.

It is not a weakly prime, because it can be changed into another prime (2247046771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1123523360 + 1123523361.

It is an arithmetic number, because the mean of its divisors is an integer number (1123523361).

Almost surely, 2^2247046721 is an apocalyptic number.

It is an amenable number.

2247046721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2247046721 is an equidigital number, since it uses as much as digits as its factorization.

2247046721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 2247046721 is about 47403.0243866359. The cubic root of 2247046721 is about 1309.7971290062.

The spelling of 2247046721 in words is "two billion, two hundred forty-seven million, forty-six thousand, seven hundred twenty-one".