21995114347 has 2 divisors, whose sum is σ = 21995114348. Its totient is φ = 21995114346.

The previous prime is 21995114303. The next prime is 21995114371. The reversal of 21995114347 is 74341159912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21995114347 - 2¹⁵ = 21995081579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21995114297 and 21995114306.

It is not a weakly prime, because it can be changed into another prime (21995114747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10997557173 + 10997557174.

It is an arithmetic number, because the mean of its divisors is an integer number (10997557174).

Almost surely, 2^21995114347 is an apocalyptic number.

21995114347 is a deficient number, since it is larger than the sum of its proper divisors (1).

21995114347 is an equidigital number, since it uses as much as digits as its factorization.

21995114347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The spelling of 21995114347 in words is "twenty-one billion, nine hundred ninety-five million, one hundred fourteen thousand, three hundred forty-seven".