2216551247 has 4 divisors (see below), whose sum is σ = 2225825760. Its totient is φ = 2207276736.

The previous prime is 2216551237. The next prime is 2216551283. The reversal of 2216551247 is 7421556122.

2216551247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7421556122 = 2 ⋅3710778061.

It is a cyclic number.

It is not a de Polignac number, because 2216551247 - 2⁴ = 2216551231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216551217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4636898 + ... + 4637375.

It is an arithmetic number, because the mean of its divisors is an integer number (556456440).

Almost surely, 2^2216551247 is an apocalyptic number.

2216551247 is a deficient number, since it is larger than the sum of its proper divisors (9274513).

2216551247 is an equidigital number, since it uses as much as digits as its factorization.

2216551247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9274512.

The product of its digits is 33600, while the sum is 35.

The square root of 2216551247 is about 47080.2638798892. The cubic root of 2216551247 is about 1303.8448789141.

The spelling of 2216551247 in words is "two billion, two hundred sixteen million, five hundred fifty-one thousand, two hundred forty-seven".