1212120212120 has 16 divisors (see below), whose sum is σ = 2727270477360. Its totient is φ = 484848084832.

The previous prime is 1212120212021. The next prime is 1212120212129. The reversal of 1212120212120 is 212120212121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212120212129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15151502612 + ... + 15151502691.

It is an arithmetic number, because the mean of its divisors is an integer number (170454404835).

Almost surely, 2^{1212120212120} is an apocalyptic number.

1212120212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212120212120 is an abundant number, since it is smaller than the sum of its proper divisors (1515150265240).

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

1212120212120 is a wasteful number, since it uses less digits than its factorization.

1212120212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30303005314 (or 30303005310 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212120212120 its reverse (212120212121), we get a palindrome (1424240424241).

Subtracting from 1212120212120 its reverse (212120212121), we obtain a palindrome (999999999999).

The spelling of 1212120212120 in words is "one trillion, two hundred twelve billion, one hundred twenty million, two hundred twelve thousand, one hundred twenty".