2112122211 has 16 divisors (see below), whose sum is σ = 3008215584. Its totient is φ = 1313521664.

The previous prime is 2112122209. The next prime is 2112122231. The reversal of 2112122211 is 1122212112.

It is a cyclic number.

It is not a de Polignac number, because 2112122211 - 2¹ = 2112122209 is a prime.

It is a super-2 number, since 2×2112122211² = 8922120468399057042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112122231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177486 + ... + 189011.

It is an arithmetic number, because the mean of its divisors is an integer number (188013474).

Almost surely, 2^2112122211 is an apocalyptic number.

2112122211 is a deficient number, since it is larger than the sum of its proper divisors (896093373).

2112122211 is a wasteful number, since it uses less digits than its factorization.

2112122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366630.

The product of its digits is 32, while the sum is 15.

The square root of 2112122211 is about 45957.8307908456. The cubic root of 2112122211 is about 1283.0384787418.

Adding to 2112122211 its reverse (1122212112), we get a palindrome (3234334323).

The spelling of 2112122211 in words is "two billion, one hundred twelve million, one hundred twenty-two thousand, two hundred eleven".