1112121407 has 2 divisors, whose sum is σ = 1112121408. Its totient is φ = 1112121406.

The previous prime is 1112121401. The next prime is 1112121421. The reversal of 1112121407 is 7041212111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1112121407 - 2⁶ = 1112121343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112121401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556060703 + 556060704.

It is an arithmetic number, because the mean of its divisors is an integer number (556060704).

Almost surely, 2^1112121407 is an apocalyptic number.

1112121407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112121407 is an equidigital number, since it uses as much as digits as its factorization.

1112121407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 1112121407 is about 33348.4843283769. The cubic root of 1112121407 is about 1036.0579959756.

Adding to 1112121407 its reverse (7041212111), we get a palindrome (8153333518).

The spelling of 1112121407 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, four hundred seven".