1211123203000 has 32 divisors (see below), whose sum is σ = 2834028297360. Its totient is φ = 484449280800.

The previous prime is 1211123202983. The next prime is 1211123203021. The reversal of 1211123203000 is 3023211121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605560602 + ... + 605562601.

Almost surely, 2^{1211123203000} is an apocalyptic number.

1211123203000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211123203000 is an abundant number, since it is smaller than the sum of its proper divisors (1622905094360).

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

1211123203000 is a wasteful number, since it uses less digits than its factorization.

1211123203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211123224 (or 1211123210 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1211123203000 its reverse (3023211121), we get a palindrome (1214146414121).

The spelling of 1211123203000 in words is "one trillion, two hundred eleven billion, one hundred twenty-three million, two hundred three thousand".