2112421429 has 2 divisors, whose sum is σ = 2112421430. Its totient is φ = 2112421428.

The previous prime is 2112421391. The next prime is 2112421447. The reversal of 2112421429 is 9241242112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1875323025 + 237098404 = 43305^2 + 15398^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112421429 - 2²¹ = 2110324277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112421397 and 2112421406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112421469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056210714 + 1056210715.

It is an arithmetic number, because the mean of its divisors is an integer number (1056210715).

Almost surely, 2^2112421429 is an apocalyptic number.

It is an amenable number.

2112421429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112421429 is an equidigital number, since it uses as much as digits as its factorization.

2112421429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 2112421429 is about 45961.0860293792. The cubic root of 2112421429 is about 1283.0990639482.

The spelling of 2112421429 in words is "two billion, one hundred twelve million, four hundred twenty-one thousand, four hundred twenty-nine".