121136453 has 2 divisors, whose sum is σ = 121136454. Its totient is φ = 121136452.

The previous prime is 121136399. The next prime is 121136489. The reversal of 121136453 is 354631121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119399329 + 1737124 = 10927^2 + 1318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121136453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121136753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60568226 + 60568227.

It is an arithmetic number, because the mean of its divisors is an integer number (60568227).

Almost surely, 2^121136453 is an apocalyptic number.

It is an amenable number.

121136453 is a deficient number, since it is larger than the sum of its proper divisors (1).

121136453 is an equidigital number, since it uses as much as digits as its factorization.

121136453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 121136453 is about 11006.2006614453. The cubic root of 121136453 is about 494.7945996770.

Adding to 121136453 its reverse (354631121), we get a palindrome (475767574).

The spelling of 121136453 in words is "one hundred twenty-one million, one hundred thirty-six thousand, four hundred fifty-three".