1212000211120 has 80 divisors (see below), whose sum is σ = 2878937691552. Its totient is φ = 474381434880.

The previous prime is 1212000211111. The next prime is 1212000211133. The reversal of 1212000211120 is 211120002121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1212000211120.

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 15 ways as a sum of consecutive naturals, for example, 298419 + ... + 1585261.

Almost surely, 2^{1212000211120} is an apocalyptic number.

1212000211120 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 1212000211120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439468845776).

1212000211120 is an abundant number, since it is smaller than the sum of its proper divisors (1666937480432).

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

1212000211120 is a wasteful number, since it uses less digits than its factorization.

1212000211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287110 (or 1287104 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212000211120 its reverse (211120002121), we get a palindrome (1423120213241).

The spelling of 1212000211120 in words is "one trillion, two hundred twelve billion, two hundred eleven thousand, one hundred twenty".