2215021847 has 2 divisors, whose sum is σ = 2215021848. Its totient is φ = 2215021846.

The previous prime is 2215021841. The next prime is 2215021849. The reversal of 2215021847 is 7481205122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215021847 is a prime.

Together with 2215021849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215021841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107510923 + 1107510924.

It is an arithmetic number, because the mean of its divisors is an integer number (1107510924).

Almost surely, 2^2215021847 is an apocalyptic number.

2215021847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215021847 is an equidigital number, since it uses as much as digits as its factorization.

2215021847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2215021847 is about 47064.0186023251. The cubic root of 2215021847 is about 1303.5449295862.

Adding to 2215021847 its reverse (7481205122), we get a palindrome (9696226969).

The spelling of 2215021847 in words is "two billion, two hundred fifteen million, twenty-one thousand, eight hundred forty-seven".