12021023211 has 8 divisors (see below), whose sum is σ = 16030639680. Its totient is φ = 8012711112.

The previous prime is 12021023207. The next prime is 12021023243. The reversal of 12021023211 is 11232012021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12021023211 - 2² = 12021023207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021023411) 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, 304381 + ... + 341598.

It is an arithmetic number, because the mean of its divisors is an integer number (2003829960).

Almost surely, 2^12021023211 is an apocalyptic number.

12021023211 is a deficient number, since it is larger than the sum of its proper divisors (4009616469).

12021023211 is an equidigital number, since it uses as much as digits as its factorization.

12021023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652185.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12021023211 its reverse (11232012021), we get a palindrome (23253035232).

The spelling of 12021023211 in words is "twelve billion, twenty-one million, twenty-three thousand, two hundred eleven".