12021212020120 has 64 divisors (see below), whose sum is σ = 28478115352800. Its totient is φ = 4554314864640.

The previous prime is 12021212020061. The next prime is 12021212020189. The reversal of 12021212020120 is 2102021212021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12021212020094 and 12021212020103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281130 + ... + 5067910.

Almost surely, 2^{12021212020120} is an apocalyptic number.

12021212020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021212020120 is an abundant number, since it is smaller than the sum of its proper divisors (16456903332680).

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

12021212020120 is a wasteful number, since it uses less digits than its factorization.

12021212020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790988 (or 3790984 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12021212020120 its reverse (2102021212021), we get a palindrome (14123233232141).

The spelling of 12021212020120 in words is "twelve trillion, twenty-one billion, two hundred twelve million, twenty thousand, one hundred twenty".