121711453 has 2 divisors, whose sum is σ = 121711454. Its totient is φ = 121711452.

The previous prime is 121711451. The next prime is 121711477. The reversal of 121711453 is 354117121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101163364 + 20548089 = 10058^2 + 4533^2 .

It is a cyclic number.

It is not a de Polignac number, because 121711453 - 2¹ = 121711451 is a prime.

Together with 121711451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121711451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60855726 + 60855727.

It is an arithmetic number, because the mean of its divisors is an integer number (60855727).

Almost surely, 2^121711453 is an apocalyptic number.

It is an amenable number.

121711453 is a deficient number, since it is larger than the sum of its proper divisors (1).

121711453 is an equidigital number, since it uses as much as digits as its factorization.

121711453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 25.

The square root of 121711453 is about 11032.2913757750. The cubic root of 121711453 is about 495.5762469120.

Adding to 121711453 its reverse (354117121), we get a palindrome (475828574).

The spelling of 121711453 in words is "one hundred twenty-one million, seven hundred eleven thousand, four hundred fifty-three".