12093639382921 has 4 divisors (see below), whose sum is σ = 12094283605572. Its totient is φ = 12092995160272.

The previous prime is 12093639382837. The next prime is 12093639382927. The reversal of 12093639382921 is 12928393639021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9801939948025 + 2291699434896 = 3130805^2 + 1513836^2 .

It is a cyclic number.

It is not a de Polignac number, because 12093639382921 - 2¹⁹ = 12093638858633 is a prime.

It is a super-2 number, since 2×12093639382921² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12093639382927) 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, 322083166 + ... + 322120711.

It is an arithmetic number, because the mean of its divisors is an integer number (3023570901393).

Almost surely, 2^{12093639382921} is an apocalyptic number.

It is an amenable number.

12093639382921 is a deficient number, since it is larger than the sum of its proper divisors (644222651).

12093639382921 is an equidigital number, since it uses as much as digits as its factorization.

12093639382921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644222650.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 12093639382921 in words is "twelve trillion, ninety-three billion, six hundred thirty-nine million, three hundred eighty-two thousand, nine hundred twenty-one".