12021122101211 has 8 divisors (see below), whose sum is σ = 12739116505104. Its totient is φ = 11304335427840.

The previous prime is 12021122101201. The next prime is 12021122101223. The reversal of 12021122101211 is 11210122112021.

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

It is a de Polignac number, because none of the positive numbers 2^k-12021122101211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 12021122101211.

It is not an unprimeable number, because it can be changed into a prime (12021122101201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301912130 + ... + 301951943.

It is an arithmetic number, because the mean of its divisors is an integer number (1592389563138).

Almost surely, 2^{12021122101211} is an apocalyptic number.

12021122101211 is a deficient number, since it is larger than the sum of its proper divisors (717994403893).

12021122101211 is a wasteful number, since it uses less digits than its factorization.

12021122101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603865261.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12021122101211 its reverse (11210122112021), we get a palindrome (23231244213232).

The spelling of 12021122101211 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, one hundred one thousand, two hundred eleven".