21212132113163 has 2 divisors, whose sum is σ = 21212132113164. Its totient is φ = 21212132113162.

The previous prime is 21212132113157. The next prime is 21212132113169. The reversal of 21212132113163 is 36131123121212.

It is a balanced prime because it is at equal distance from previous prime (21212132113157) and next prime (21212132113169).

It is a cyclic number.

It is not a de Polignac number, because 21212132113163 - 2⁴ = 21212132113147 is a prime.

It is not a weakly prime, because it can be changed into another prime (21212132113169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606066056581 + 10606066056582.

It is an arithmetic number, because the mean of its divisors is an integer number (10606066056582).

Almost surely, 2^{21212132113163} is an apocalyptic number.

21212132113163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212132113163 is an equidigital number, since it uses as much as digits as its factorization.

21212132113163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

Adding to 21212132113163 its reverse (36131123121212), we get a palindrome (57343255234375).

The spelling of 21212132113163 in words is "twenty-one trillion, two hundred twelve billion, one hundred thirty-two million, one hundred thirteen thousand, one hundred sixty-three".