1121002120000 has 140 divisors (see below), whose sum is σ = 3176824715680. Its totient is φ = 384343488000.

The previous prime is 1121002119943. The next prime is 1121002120003. The reversal of 1121002120000 is 212001211.

It is a tau number, because it is divible by the number of its divisors (140).

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 (1121002120003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1721790 + ... + 2281789.

It is an arithmetic number, because the mean of its divisors is an integer number (22691605112).

Almost surely, 2^{1121002120000} is an apocalyptic number.

1121002120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121002120000 is an abundant number, since it is smaller than the sum of its proper divisors (2055822595680).

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

1121002120000 is an frugal number, since it uses more digits than its factorization.

1121002120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003618 (or 4003593 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1121002120000 its reverse (212001211), we get a palindrome (1121214121211).

The spelling of 1121002120000 in words is "one trillion, one hundred twenty-one billion, two million, one hundred twenty thousand".