1121012220000 has 120 divisors (see below), whose sum is σ = 3677144480856. Its totient is φ = 298936576000.

The previous prime is 1121012219959. The next prime is 1121012220007. The reversal of 1121012220000 is 222101211.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121012220007) 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, 9281769 + ... + 9401768.

Almost surely, 2^{1121012220000} is an apocalyptic number.

1121012220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121012220000 is an abundant number, since it is smaller than the sum of its proper divisors (2556132260856).

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

1121012220000 is an equidigital number, since it uses as much as digits as its factorization.

1121012220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18683570 (or 18683547 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1121012220000 its reverse (222101211), we get a palindrome (1121234321211).

The spelling of 1121012220000 in words is "one trillion, one hundred twenty-one billion, twelve million, two hundred twenty thousand".