21612112055327 has 2 divisors, whose sum is σ = 21612112055328. Its totient is φ = 21612112055326.

The previous prime is 21612112055239. The next prime is 21612112055383. The reversal of 21612112055327 is 72355021121612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21612112055327 - 2⁸ = 21612112055071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21612112055627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10806056027663 + 10806056027664.

It is an arithmetic number, because the mean of its divisors is an integer number (10806056027664).

Almost surely, 2^{21612112055327} is an apocalyptic number.

21612112055327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21612112055327 is an equidigital number, since it uses as much as digits as its factorization.

21612112055327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

Adding to 21612112055327 its reverse (72355021121612), we get a palindrome (93967133176939).

The spelling of 21612112055327 in words is "twenty-one trillion, six hundred twelve billion, one hundred twelve million, fifty-five thousand, three hundred twenty-seven".