1121203000 has 32 divisors (see below), whose sum is σ = 2623617360. Its totient is φ = 448480800.

The previous prime is 1121202967. The next prime is 1121203003. The reversal of 1121203000 is 3021211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121203003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559602 + ... + 561601.

Almost surely, 2^1121203000 is an apocalyptic number.

1121203000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121203000 is an abundant number, since it is smaller than the sum of its proper divisors (1502414360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121203000 is a wasteful number, since it uses less digits than its factorization.

1121203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121224 (or 1121210 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1121203000 is about 33484.3694878670. The cubic root of 1121203000 is about 1038.8705069918.

Adding to 1121203000 its reverse (3021211), we get a palindrome (1124224211).

The spelling of 1121203000 in words is "one billion, one hundred twenty-one million, two hundred three thousand".