321231222132127 has 2 divisors, whose sum is σ = 321231222132128. Its totient is φ = 321231222132126.

The previous prime is 321231222132109. The next prime is 321231222132157. The reversal of 321231222132127 is 721231222132123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321231222132127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321231222132092 and 321231222132101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321231222132157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160615611066063 + 160615611066064.

It is an arithmetic number, because the mean of its divisors is an integer number (160615611066064).

Almost surely, 2^{321231222132127} is an apocalyptic number.

321231222132127 is a deficient number, since it is larger than the sum of its proper divisors (1).

321231222132127 is an equidigital number, since it uses as much as digits as its factorization.

321231222132127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The spelling of 321231222132127 in words is "three hundred twenty-one trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred twenty-seven".