1121220003 has 8 divisors (see below), whose sum is σ = 1495646208. Its totient is φ = 747136904.

The previous prime is 1121219987. The next prime is 1121220007. The reversal of 1121220003 is 3000221211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121220003 - 2⁴ = 1121219987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121220007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78051 + ... + 91292.

It is an arithmetic number, because the mean of its divisors is an integer number (186955776).

Almost surely, 2^1121220003 is an apocalyptic number.

1121220003 is a deficient number, since it is larger than the sum of its proper divisors (374426205).

1121220003 is a wasteful number, since it uses less digits than its factorization.

1121220003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171553.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1121220003 is about 33484.6233814866. The cubic root of 1121220003 is about 1038.8757584423.

Adding to 1121220003 its reverse (3000221211), we get a palindrome (4121441214).

The spelling of 1121220003 in words is "one billion, one hundred twenty-one million, two hundred twenty thousand, three".