1112543101 has 2 divisors, whose sum is σ = 1112543102. Its totient is φ = 1112543100.

The previous prime is 1112543083. The next prime is 1112543129. The reversal of 1112543101 is 1013452111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980316100 + 132227001 = 31310^2 + 11499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112543101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112543191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556271550 + 556271551.

It is an arithmetic number, because the mean of its divisors is an integer number (556271551).

Almost surely, 2^1112543101 is an apocalyptic number.

It is an amenable number.

1112543101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112543101 is an equidigital number, since it uses as much as digits as its factorization.

1112543101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1112543101 is about 33354.8062653645. The cubic root of 1112543101 is about 1036.1889301909.

Adding to 1112543101 its reverse (1013452111), we get a palindrome (2125995212).

The spelling of 1112543101 in words is "one billion, one hundred twelve million, five hundred forty-three thousand, one hundred one".