1112121401 has 2 divisors, whose sum is σ = 1112121402. Its totient is φ = 1112121400.

The previous prime is 1112121389. The next prime is 1112121407. The reversal of 1112121401 is 1041212111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 665898025 + 446223376 = 25805^2 + 21124^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112121401 - 2⁶ = 1112121337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1112121407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556060700 + 556060701.

It is an arithmetic number, because the mean of its divisors is an integer number (556060701).

Almost surely, 2^1112121401 is an apocalyptic number.

It is an amenable number.

1112121401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112121401 is an equidigital number, since it uses as much as digits as its factorization.

1112121401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1112121401 is about 33348.4842384178. The cubic root of 1112121401 is about 1036.0579941124.

Adding to 1112121401 its reverse (1041212111), we get a palindrome (2153333512).

The spelling of 1112121401 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, four hundred one".