12021211201009 has 4 divisors (see below), whose sum is σ = 12022671689280. Its totient is φ = 12019750712740.

The previous prime is 12021211201001. The next prime is 12021211201031. The reversal of 12021211201009 is 90010211212021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12021211201009 - 2³ = 12021211201001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021211201001) 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, 730231789 + ... + 730248250.

It is an arithmetic number, because the mean of its divisors is an integer number (3005667922320).

Almost surely, 2^{12021211201009} is an apocalyptic number.

It is an amenable number.

12021211201009 is a deficient number, since it is larger than the sum of its proper divisors (1460488271).

12021211201009 is an equidigital number, since it uses as much as digits as its factorization.

12021211201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460488270.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 12021211201009 in words is "twelve trillion, twenty-one billion, two hundred eleven million, two hundred one thousand, nine".