1121040403203 has 16 divisors (see below), whose sum is σ = 1721702850560. Its totient is φ = 635550463296.

The previous prime is 1121040403199. The next prime is 1121040403207. The reversal of 1121040403203 is 3023040401211.

It is an interprime number because it is at equal distance from previous prime (1121040403199) and next prime (1121040403207).

It is not a de Polignac number, because 1121040403203 - 2² = 1121040403199 is a prime.

It is a super-2 number, since 2×1121040403203² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1121040403203.

It is not an unprimeable number, because it can be changed into a prime (1121040403207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210166138 + ... + 210171471.

It is an arithmetic number, because the mean of its divisors is an integer number (107606428160).

Almost surely, 2^{1121040403203} is an apocalyptic number.

1121040403203 is a deficient number, since it is larger than the sum of its proper divisors (600662447357).

1121040403203 is a wasteful number, since it uses less digits than its factorization.

1121040403203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420337746.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1121040403203 its reverse (3023040401211), we get a palindrome (4144080804414).

The spelling of 1121040403203 in words is "one trillion, one hundred twenty-one billion, forty million, four hundred three thousand, two hundred three".