12020222021111 has 16 divisors (see below), whose sum is σ = 12868131158400. Its totient is φ = 11193863789088.

The previous prime is 12020222021107. The next prime is 12020222021161. The reversal of 12020222021111 is 11112022202021.

It is a cyclic number.

It is not a de Polignac number, because 12020222021111 - 2² = 12020222021107 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 12020222021111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020222021161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17905721 + ... + 18564893.

It is an arithmetic number, because the mean of its divisors is an integer number (804258197400).

Almost surely, 2^{12020222021111} is an apocalyptic number.

12020222021111 is a deficient number, since it is larger than the sum of its proper divisors (847909137289).

12020222021111 is a wasteful number, since it uses less digits than its factorization.

12020222021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675518.

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

Adding to 12020222021111 its reverse (11112022202021), we get a palindrome (23132244223132).

The spelling of 12020222021111 in words is "twelve trillion, twenty billion, two hundred twenty-two million, twenty-one thousand, one hundred eleven".