12001212220211 has 8 divisors (see below), whose sum is σ = 12025029798000. Its totient is φ = 11977395582880.

The previous prime is 12001212220199. The next prime is 12001212220237. The reversal of 12001212220211 is 11202221210021.

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 12001212220211 - 2³⁰ = 12000138478387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12001212220211.

It is not an unprimeable number, because it can be changed into a prime (12001212222211) 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, 28882556 + ... + 29295126.

It is an arithmetic number, because the mean of its divisors is an integer number (1503128724750).

Almost surely, 2^{12001212220211} is an apocalyptic number.

12001212220211 is a deficient number, since it is larger than the sum of its proper divisors (23817577789).

12001212220211 is an equidigital number, since it uses as much as digits as its factorization.

12001212220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470229.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12001212220211 its reverse (11202221210021), we get a palindrome (23203433430232).

It can be divided in two parts, 12001 and 212220211, that added together give a palindrome (212232212).

The spelling of 12001212220211 in words is "twelve trillion, one billion, two hundred twelve million, two hundred twenty thousand, two hundred eleven".