1121212220000 has 120 divisors (see below), whose sum is σ = 2920607025336. Its totient is φ = 422103296000.

The previous prime is 1121212219961. The next prime is 1121212220027. The reversal of 1121212220000 is 222121211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1308842 + ... + 1988841.

Almost surely, 2^{1121212220000} is an apocalyptic number.

1121212220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121212220000 is an abundant number, since it is smaller than the sum of its proper divisors (1799394805336).

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

1121212220000 is an equidigital number, since it uses as much as digits as its factorization.

1121212220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297730 (or 3297707 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1121212220000 its reverse (222121211), we get a palindrome (1121434341211).

The spelling of 1121212220000 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty thousand".