2212112221111 has 8 divisors (see below), whose sum is σ = 2382451837920. Its totient is φ = 2041797909792.

The previous prime is 2212112221103. The next prime is 2212112221177. The reversal of 2212112221111 is 1111222112122.

It is a happy number.

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 2212112221111 - 2³ = 2212112221103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212112221511) 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, 6144616 + ... + 6494653.

It is an arithmetic number, because the mean of its divisors is an integer number (297806479740).

Almost surely, 2^{2212112221111} is an apocalyptic number.

2212112221111 is a deficient number, since it is larger than the sum of its proper divisors (170339616809).

2212112221111 is a wasteful number, since it uses less digits than its factorization.

2212112221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12652745.

The product of its digits is 64, while the sum is 19.

Adding to 2212112221111 its reverse (1111222112122), we get a palindrome (3323334333233).

The spelling of 2212112221111 in words is "two trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, one hundred eleven".