121830437285 has 8 divisors (see below), whose sum is σ = 146199272856. Its totient is φ = 97462517760.

The previous prime is 121830437279. The next prime is 121830437369. The reversal of 121830437285 is 582734038121.

It can be written as a sum of positive squares in 4 ways, for example, as 493861729 + 121336575556 = 22223^2 + 348334^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121830437285 - 2³⁶ = 53110960549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108917 + ... + 505493.

It is an arithmetic number, because the mean of its divisors is an integer number (18274909107).

Almost surely, 2^121830437285 is an apocalyptic number.

It is an amenable number.

121830437285 is a deficient number, since it is larger than the sum of its proper divisors (24368835571).

121830437285 is an equidigital number, since it uses as much as digits as its factorization.

121830437285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458023.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 121830437285 in words is "one hundred twenty-one billion, eight hundred thirty million, four hundred thirty-seven thousand, two hundred eighty-five".