121545881245 has 8 divisors (see below), whose sum is σ = 145872569016. Its totient is φ = 97225030656.

The previous prime is 121545881231. The next prime is 121545881263. The reversal of 121545881245 is 542188545121.

It can be written as a sum of positive squares in 4 ways, for example, as 20959221529 + 100586659716 = 144773^2 + 317154^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121545881245 - 2⁷ = 121545881117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121545881195 and 121545881204.

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, 1413352 + ... + 1496881.

It is an arithmetic number, because the mean of its divisors is an integer number (18234071127).

Almost surely, 2^121545881245 is an apocalyptic number.

It is an amenable number.

121545881245 is a deficient number, since it is larger than the sum of its proper divisors (24326687771).

121545881245 is an equidigital number, since it uses as much as digits as its factorization.

121545881245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918591.

The product of its digits is 512000, while the sum is 46.

The spelling of 121545881245 in words is "one hundred twenty-one billion, five hundred forty-five million, eight hundred eighty-one thousand, two hundred forty-five".