121727 has 2 divisors, whose sum is σ = 121728. Its totient is φ = 121726.

The previous prime is 121721. The next prime is 121763. The reversal of 121727 is 727121.

It is a weak prime.

It is an emirp because it is prime and its reverse (727121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121727 - 2⁴ = 121711 is a prime.

It is a Chen prime.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 121699 and 121708.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121727.

It is not a weakly prime, because it can be changed into another prime (121721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60863 + 60864.

It is an arithmetic number, because the mean of its divisors is an integer number (60864).

2¹²¹⁷²⁷ is an apocalyptic number.

121727 is a deficient number, since it is larger than the sum of its proper divisors (1).

121727 is an equidigital number, since it uses as much as digits as its factorization.

121727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196, while the sum is 20.

The square root of 121727 is about 348.8939667005. The cubic root of 121727 is about 49.5597347079.

Adding to 121727 its reverse (727121), we get a palindrome (848848).

It can be divided in two parts, 121 and 727, that added together give a palindrome (848).

The spelling of 121727 in words is "one hundred twenty-one thousand, seven hundred twenty-seven", and thus it is an iban number.