12010021211 has 8 divisors (see below), whose sum is σ = 12061591200. Its totient is φ = 11958503040.

The previous prime is 12010021207. The next prime is 12010021213. The reversal of 12010021211 is 11212001021.

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 12010021211 - 2² = 12010021207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010021192 and 12010021201.

It is not an unprimeable number, because it can be changed into a prime (12010021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493571 + ... + 517331.

It is an arithmetic number, because the mean of its divisors is an integer number (1507698900).

Almost surely, 2^12010021211 is an apocalyptic number.

12010021211 is a deficient number, since it is larger than the sum of its proper divisors (51569989).

12010021211 is a wasteful number, since it uses less digits than its factorization.

12010021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25909.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12010021211 its reverse (11212001021), we get a palindrome (23222022232).

The spelling of 12010021211 in words is "twelve billion, ten million, twenty-one thousand, two hundred eleven".