1121203120000 has 160 divisors (see below), whose sum is σ = 2796183997200. Its totient is φ = 447674880000.

The previous prime is 1121203119991. The next prime is 1121203120027. The reversal of 1121203120000 is 213021211.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45507685 + ... + 45532315.

Almost surely, 2^{1121203120000} is an apocalyptic number.

1121203120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121203120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1398091998600).

1121203120000 is an abundant number, since it is smaller than the sum of its proper divisors (1674980877200).

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

1121203120000 is an frugal number, since it uses more digits than its factorization.

1121203120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25234 (or 25207 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1121203120000 its reverse (213021211), we get a palindrome (1121416141211).

The spelling of 1121203120000 in words is "one trillion, one hundred twenty-one billion, two hundred three million, one hundred twenty thousand".