12421381085 has 8 divisors (see below), whose sum is σ = 14906389176. Its totient is φ = 9936616960.

The previous prime is 12421381079. The next prime is 12421381121. The reversal of 12421381085 is 58018312421.

It can be written as a sum of positive squares in 4 ways, for example, as 1842641476 + 10578739609 = 42926^2 + 102853^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-12421381085 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, 81137 + ... + 177273.

It is an arithmetic number, because the mean of its divisors is an integer number (1863298647).

Almost surely, 2^12421381085 is an apocalyptic number.

It is an amenable number.

12421381085 is a deficient number, since it is larger than the sum of its proper divisors (2485008091).

12421381085 is an equidigital number, since it uses as much as digits as its factorization.

12421381085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121983.

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 12421381085 in words is "twelve billion, four hundred twenty-one million, three hundred eighty-one thousand, eighty-five".