21224277367 has 2 divisors, whose sum is σ = 21224277368. Its totient is φ = 21224277366.

The previous prime is 21224277359. The next prime is 21224277383. The reversal of 21224277367 is 76377242212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21224277367 - 2³ = 21224277359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21224277307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612138683 + 10612138684.

It is an arithmetic number, because the mean of its divisors is an integer number (10612138684).

Almost surely, 2^21224277367 is an apocalyptic number.

21224277367 is a deficient number, since it is larger than the sum of its proper divisors (1).

21224277367 is an equidigital number, since it uses as much as digits as its factorization.

21224277367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 43.

The spelling of 21224277367 in words is "twenty-one billion, two hundred twenty-four million, two hundred seventy-seven thousand, three hundred sixty-seven".