2112021221111 has 8 divisors (see below), whose sum is σ = 2123763458544. Its totient is φ = 2100279792960.

The previous prime is 2112021221087. The next prime is 2112021221153. The reversal of 2112021221111 is 1111221202112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112021221111 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 2112021221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112021221411) 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, 5472731 + ... + 5845923.

It is an arithmetic number, because the mean of its divisors is an integer number (265470432318).

Almost surely, 2^{2112021221111} is an apocalyptic number.

2112021221111 is a deficient number, since it is larger than the sum of its proper divisors (11742237433).

2112021221111 is a wasteful number, since it uses less digits than its factorization.

2112021221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404641.

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

Adding to 2112021221111 its reverse (1111221202112), we get a palindrome (3223242423223).

The spelling of 2112021221111 in words is "two trillion, one hundred twelve billion, twenty-one million, two hundred twenty-one thousand, one hundred eleven".