12102021021009 has 8 divisors (see below), whose sum is σ = 16317331714080. Its totient is φ = 7977362170976.

The previous prime is 12102021020951. The next prime is 12102021021031. The reversal of 12102021021009 is 90012012020121.

12102021021009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12102021021009 - 2¹⁵ = 12102020988241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12102021021509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22662960447 + ... + 22662960980.

It is an arithmetic number, because the mean of its divisors is an integer number (2039666464260).

Almost surely, 2^{12102021021009} is an apocalyptic number.

It is an amenable number.

12102021021009 is a deficient number, since it is larger than the sum of its proper divisors (4215310693071).

12102021021009 is an equidigital number, since it uses as much as digits as its factorization.

12102021021009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45325921519.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 12102021021009 in words is "twelve trillion, one hundred two billion, twenty-one million, twenty-one thousand, nine".