1112121003 has 24 divisors (see below), whose sum is σ = 1761633792. Its totient is φ = 621972624.

The previous prime is 1112120987. The next prime is 1112121071. The reversal of 1112121003 is 3001212111.

It is not a de Polignac number, because 1112121003 - 2⁴ = 1112120987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1112121003.

It is not an unprimeable number, because it can be changed into a prime (1112121103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73575 + ... + 87392.

It is an arithmetic number, because the mean of its divisors is an integer number (73401408).

Almost surely, 2^1112121003 is an apocalyptic number.

1112121003 is a deficient number, since it is larger than the sum of its proper divisors (649512789).

1112121003 is a wasteful number, since it uses less digits than its factorization.

1112121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161031 (or 161024 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1112121003 is about 33348.4782711296. The cubic root of 1112121003 is about 1036.0578705194.

Adding to 1112121003 its reverse (3001212111), we get a palindrome (4113333114).

The spelling of 1112121003 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, three".