1212000012120 has 128 divisors (see below), whose sum is σ = 3888000699840. Its totient is φ = 301176422400.

The previous prime is 1212000012107. The next prime is 1212000012151. The reversal of 1212000012120 is 212100002121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212000012096 and 1212000012105.

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 31 ways as a sum of consecutive naturals, for example, 2735137 + ... + 3147216.

Almost surely, 2^{1212000012120} is an apocalyptic number.

1212000012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212000012120 is an abundant number, since it is smaller than the sum of its proper divisors (2676000687720).

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

1212000012120 is a wasteful number, since it uses less digits than its factorization.

1212000012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882485 (or 5882481 counting only the distinct ones).

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

Adding to 1212000012120 its reverse (212100002121), we get a palindrome (1424100014241).

Subtracting from 1212000012120 its reverse (212100002121), we obtain a palindrome (999900009999).

It can be divided in two parts, 121200001 and 2120, that added together give a palindrome (121202121).

The spelling of 1212000012120 in words is "one trillion, two hundred twelve billion, twelve thousand, one hundred twenty".