1121000001 has 16 divisors (see below), whose sum is σ = 1631717568. Its totient is φ = 678905600.

The previous prime is 1120999993. The next prime is 1121000011. The reversal of 1121000001 is 1000001211.

It is a cyclic number.

It is not a de Polignac number, because 1121000001 - 2³ = 1120999993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121000011) 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 15 ways as a sum of consecutive naturals, for example, 37405 + ... + 60341.

It is an arithmetic number, because the mean of its divisors is an integer number (101982348).

Almost surely, 2^1121000001 is an apocalyptic number.

1121000001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121000001 is a deficient number, since it is larger than the sum of its proper divisors (510717567).

1121000001 is a wasteful number, since it uses less digits than its factorization.

1121000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24432.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1121000001 is about 33481.3381005001. The cubic root of 1121000001 is about 1038.8078057674.

Adding to 1121000001 its reverse (1000001211), we get a palindrome (2121001212).

It can be divided in two parts, 11 and 21000001, that added together give a palindrome (21000012).

The spelling of 1121000001 in words is "one billion, one hundred twenty-one million, one", and thus it is an aban number.