121532155235 has 4 divisors (see below), whose sum is σ = 145838586288. Its totient is φ = 97225724184.

The previous prime is 121532155229. The next prime is 121532155243. The reversal of 121532155235 is 532551235121.

It is a happy number.

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 121532155235 - 2⁸ = 121532154979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121532155195 and 121532155204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12153215519 + ... + 12153215528.

It is an arithmetic number, because the mean of its divisors is an integer number (36459646572).

Almost surely, 2^121532155235 is an apocalyptic number.

121532155235 is a deficient number, since it is larger than the sum of its proper divisors (24306431053).

121532155235 is an equidigital number, since it uses as much as digits as its factorization.

121532155235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24306431052.

The product of its digits is 45000, while the sum is 35.

The spelling of 121532155235 in words is "one hundred twenty-one billion, five hundred thirty-two million, one hundred fifty-five thousand, two hundred thirty-five".