121453525135 has 4 divisors (see below), whose sum is σ = 145744230168. Its totient is φ = 97162820104.

The previous prime is 121453525133. The next prime is 121453525183. The reversal of 121453525135 is 531525354121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121453525135 - 2¹ = 121453525133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121453525094 and 121453525103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121453525133) 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 in 3 ways as a sum of consecutive naturals, for example, 12145352509 + ... + 12145352518.

It is an arithmetic number, because the mean of its divisors is an integer number (36436057542).

Almost surely, 2^121453525135 is an apocalyptic number.

121453525135 is a deficient number, since it is larger than the sum of its proper divisors (24290705033).

121453525135 is an equidigital number, since it uses as much as digits as its factorization.

121453525135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24290705032.

The product of its digits is 90000, while the sum is 37.

Adding to 121453525135 its reverse (531525354121), we get a palindrome (652978879256).

The spelling of 121453525135 in words is "one hundred twenty-one billion, four hundred fifty-three million, five hundred twenty-five thousand, one hundred thirty-five".