121151 has 2 divisors, whose sum is σ = 121152. Its totient is φ = 121150.

The previous prime is 121139. The next prime is 121157. The reversal of 121151 is 151121.

It is a strong prime.

It is an emirp because it is prime and its reverse (151121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60575 + 60576.

It is an arithmetic number, because the mean of its divisors is an integer number (60576).

2¹²¹¹⁵¹ is an apocalyptic number.

121151 is a deficient number, since it is larger than the sum of its proper divisors (1).

121151 is an equidigital number, since it uses as much as digits as its factorization.

121151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10, while the sum is 11.

The square root of 121151 is about 348.0675221850. The cubic root of 121151 is about 49.4814405135.

Adding to 121151 its reverse (151121), we get a palindrome (272272).

It can be divided in two parts, 121 and 151, that added together give a palindrome (272).

The spelling of 121151 in words is "one hundred twenty-one thousand, one hundred fifty-one".