2112212122 has 4 divisors (see below), whose sum is σ = 3168318186. Its totient is φ = 1056106060.

The previous prime is 2112212119. The next prime is 2112212131. The reversal of 2112212122 is 2212122112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1987465561 + 124746561 = 44581^2 + 11169^2 .

It is a super-2 number, since 2×2112212122² = 8922880096647485768, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2112212096 and 2112212105.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 528053029 + ... + 528053032.

Almost surely, 2^2112212122 is an apocalyptic number.

2112212122 is a deficient number, since it is larger than the sum of its proper divisors (1056106064).

2112212122 is a wasteful number, since it uses less digits than its factorization.

2112212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056106063.

The product of its digits is 64, while the sum is 16.

The square root of 2112212122 is about 45958.8089706424. The cubic root of 2112212122 is about 1283.0566843859.

Adding to 2112212122 its reverse (2212122112), we get a palindrome (4324334234).

The spelling of 2112212122 in words is "two billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-two".