1212012112120 has 16 divisors (see below), whose sum is σ = 2727027252360. Its totient is φ = 484804844832.

The previous prime is 1212012112049. The next prime is 1212012112121. The reversal of 1212012112120 is 212112102121.

It is a junction number, because it is equal to n+sod(n) for n = 1212012112094 and 1212012112103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012112121) 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, 15150151362 + ... + 15150151441.

Almost surely, 2^{1212012112120} is an apocalyptic number.

1212012112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212012112120 is an abundant number, since it is smaller than the sum of its proper divisors (1515015140240).

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

1212012112120 is a wasteful number, since it uses less digits than its factorization.

1212012112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30300302814 (or 30300302810 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212012112120 its reverse (212112102121), we get a palindrome (1424124214241).

Subtracting from 1212012112120 its reverse (212112102121), we obtain a palindrome (999900009999).

The spelling of 1212012112120 in words is "one trillion, two hundred twelve billion, twelve million, one hundred twelve thousand, one hundred twenty".