29321217127 has 2 divisors, whose sum is σ = 29321217128. Its totient is φ = 29321217126.

The previous prime is 29321217097. The next prime is 29321217139. The reversal of 29321217127 is 72171212392.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29321217127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29321217727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14660608563 + 14660608564.

It is an arithmetic number, because the mean of its divisors is an integer number (14660608564).

Almost surely, 2^29321217127 is an apocalyptic number.

29321217127 is a deficient number, since it is larger than the sum of its proper divisors (1).

29321217127 is an equidigital number, since it uses as much as digits as its factorization.

29321217127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 37.

The spelling of 29321217127 in words is "twenty-nine billion, three hundred twenty-one million, two hundred seventeen thousand, one hundred twenty-seven".