21163132022247 has 12 divisors (see below), whose sum is σ = 31555064234304. Its totient is φ = 13653633562560.

The previous prime is 21163132022239. The next prime is 21163132022251. The reversal of 21163132022247 is 74222023136112.

21163132022247 is a `hidden beast` number, since 2 + 11 + 63 + 1 + 320 + 22 + 247 = 666.

It is not a de Polignac number, because 21163132022247 - 2³ = 21163132022239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21163132023247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37926759618 + ... + 37926760175.

It is an arithmetic number, because the mean of its divisors is an integer number (2629588686192).

Almost surely, 2^{21163132022247} is an apocalyptic number.

21163132022247 is a deficient number, since it is larger than the sum of its proper divisors (10391932212057).

21163132022247 is a wasteful number, since it uses less digits than its factorization.

21163132022247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75853519830 (or 75853519827 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 21163132022247 its reverse (74222023136112), we get a palindrome (95385155158359).

The spelling of 21163132022247 in words is "twenty-one trillion, one hundred sixty-three billion, one hundred thirty-two million, twenty-two thousand, two hundred forty-seven".