2112421447 has 2 divisors, whose sum is σ = 2112421448. Its totient is φ = 2112421446.

The previous prime is 2112421429. The next prime is 2112421469. The reversal of 2112421447 is 7441242112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112421447 - 2²⁷ = 1978203719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112421247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056210723 + 1056210724.

It is an arithmetic number, because the mean of its divisors is an integer number (1056210724).

Almost surely, 2^2112421447 is an apocalyptic number.

2112421447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112421447 is an equidigital number, since it uses as much as digits as its factorization.

2112421447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 28.

The square root of 2112421447 is about 45961.0862251971. The cubic root of 2112421447 is about 1283.0990675926.

Adding to 2112421447 its reverse (7441242112), we get a palindrome (9553663559).

The spelling of 2112421447 in words is "two billion, one hundred twelve million, four hundred twenty-one thousand, four hundred forty-seven".