121248468529 has 4 divisors (see below), whose sum is σ = 121249942900. Its totient is φ = 121246994160.

The previous prime is 121248468511. The next prime is 121248468557. The reversal of 121248468529 is 925864842121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 925864842121 = 2063 ⋅448795367.

It can be written as a sum of positive squares in 2 ways, for example, as 75392528929 + 45855939600 = 274577^2 + 214140^2 .

It is a cyclic number.

It is not a de Polignac number, because 121248468529 - 2⁹ = 121248468017 is a prime.

It is a super-2 number, since 2×121248468529² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121248468589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606054 + ... + 780895.

It is an arithmetic number, because the mean of its divisors is an integer number (30312485725).

Almost surely, 2^121248468529 is an apocalyptic number.

It is an amenable number.

121248468529 is a deficient number, since it is larger than the sum of its proper divisors (1474371).

121248468529 is an equidigital number, since it uses as much as digits as its factorization.

121248468529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474370.

The product of its digits is 2211840, while the sum is 52.

The spelling of 121248468529 in words is "one hundred twenty-one billion, two hundred forty-eight million, four hundred sixty-eight thousand, five hundred twenty-nine".