2112122220111 has 8 divisors (see below), whose sum is σ = 3129069955760. Its totient is φ = 1408081480056.

The previous prime is 2112122220073. The next prime is 2112122220113. The reversal of 2112122220111 is 1110222212112.

2112122220111 is a `hidden beast` number, since 211 + 2 + 122 + 220 + 111 = 666.

It is not a de Polignac number, because 2112122220111 - 2¹⁷ = 2112122089039 is a prime.

It is a super-2 number, since 2×2112122220111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112122220113) 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, 39113374420 + ... + 39113374473.

It is an arithmetic number, because the mean of its divisors is an integer number (391133744470).

Almost surely, 2^{2112122220111} is an apocalyptic number.

2112122220111 is a deficient number, since it is larger than the sum of its proper divisors (1016947735649).

2112122220111 is an equidigital number, since it uses as much as digits as its factorization.

2112122220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78226748902 (or 78226748896 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2112122220111 its reverse (1110222212112), we get a palindrome (3222344432223).

The spelling of 2112122220111 in words is "two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, one hundred eleven".