1111120001 has 4 divisors (see below), whose sum is σ = 1113686532. Its totient is φ = 1108553472.

The previous prime is 1111119979. The next prime is 1111120009. The reversal of 1111120001 is 1000211111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51552400 + 1059567601 = 7180^2 + 32551^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111120001 - 2⁶ = 1111119937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111120009) 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 in 3 ways as a sum of consecutive naturals, for example, 1282616 + ... + 1283481.

It is an arithmetic number, because the mean of its divisors is an integer number (278421633).

Almost surely, 2^1111120001 is an apocalyptic number.

It is an amenable number.

1111120001 is a deficient number, since it is larger than the sum of its proper divisors (2566531).

1111120001 is an equidigital number, since it uses as much as digits as its factorization.

1111120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566530.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1111120001 is about 33333.4666813999. The cubic root of 1111120001 is about 1035.7469309391.

Adding to 1111120001 its reverse (1000211111), we get a palindrome (2111331112).

The spelling of 1111120001 in words is "one billion, one hundred eleven million, one hundred twenty thousand, one".