2112123432212 has 12 divisors (see below), whose sum is σ = 3913640477460. Its totient is φ = 993940438656.

The previous prime is 2112123432137. The next prime is 2112123432217. The reversal of 2112123432212 is 2122343212112.

It can be written as a sum of positive squares in 2 ways, for example, as 1850998344196 + 261125088016 = 1360514^2 + 511004^2 .

It is a super-2 number, since 2×2112123432212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112123432217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15530319287 + ... + 15530319422.

It is an arithmetic number, because the mean of its divisors is an integer number (326136706455).

Almost surely, 2^{2112123432212} is an apocalyptic number.

It is an amenable number.

2112123432212 is a deficient number, since it is larger than the sum of its proper divisors (1801517045248).

2112123432212 is a wasteful number, since it uses less digits than its factorization.

2112123432212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31060638730 (or 31060638728 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

Adding to 2112123432212 its reverse (2122343212112), we get a palindrome (4234466644324).

The spelling of 2112123432212 in words is "two trillion, one hundred twelve billion, one hundred twenty-three million, four hundred thirty-two thousand, two hundred twelve".