1121001001003 has 64 divisors (see below), whose sum is σ = 1296548757504. Its totient is φ = 961768080000.

The previous prime is 1121001000991. The next prime is 1121001001007. The reversal of 1121001001003 is 3001001001211.

It is a de Polignac number, because none of the positive numbers 2^k-1121001001003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121001001007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 574576678 + ... + 574578628.

It is an arithmetic number, because the mean of its divisors is an integer number (20258574336).

Almost surely, 2^{1121001001003} is an apocalyptic number.

1121001001003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1121001001003 is a deficient number, since it is larger than the sum of its proper divisors (175547756501).

1121001001003 is a wasteful number, since it uses less digits than its factorization.

1121001001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 1121001001003 its reverse (3001001001211), we get a palindrome (4122002002214).

The spelling of 1121001001003 in words is "one trillion, one hundred twenty-one billion, one million, one thousand, three".