2112178433 has 2 divisors, whose sum is σ = 2112178434. Its totient is φ = 2112178432.

The previous prime is 2112178429. The next prime is 2112178463. The reversal of 2112178433 is 3348712112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1950812224 + 161366209 = 44168^2 + 12703^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112178433 - 2² = 2112178429 is a prime.

It is a super-2 number, since 2×2112178433² = 8922595465660670978, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112178433.

It is not a weakly prime, because it can be changed into another prime (2112178463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056089216 + 1056089217.

It is an arithmetic number, because the mean of its divisors is an integer number (1056089217).

Almost surely, 2^2112178433 is an apocalyptic number.

It is an amenable number.

2112178433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112178433 is an equidigital number, since it uses as much as digits as its factorization.

2112178433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 2112178433 is about 45958.4424562017. The cubic root of 2112178433 is about 1283.0498629236.

The spelling of 2112178433 in words is "two billion, one hundred twelve million, one hundred seventy-eight thousand, four hundred thirty-three".