12021212020212 has 144 divisors (see below), whose sum is σ = 32223057939072. Its totient is φ = 3765664235520.

The previous prime is 12021212020211. The next prime is 12021212020333. The reversal of 12021212020212 is 21202021212021.

It is a happy number.

12021212020212 is a `hidden beast` number, since 120 + 212 + 120 + 2 + 0 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021212020211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1295245012 + ... + 1295254292.

It is an arithmetic number, because the mean of its divisors is an integer number (223771235688).

Almost surely, 2^{12021212020212} is an apocalyptic number.

12021212020212 is a gapful number since it is divisible by the number (12) 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 12021212020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16111528969536).

12021212020212 is an abundant number, since it is smaller than the sum of its proper divisors (20201845918860).

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

12021212020212 is a wasteful number, since it uses less digits than its factorization.

12021212020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12278 (or 12273 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12021212020212 its reverse (21202021212021), we get a palindrome (33223233232233).

It can be divided in two parts, 12021 and 212020212, that multiplied together give a palindrome (2548694968452).

The spelling of 12021212020212 in words is "twelve trillion, twenty-one billion, two hundred twelve million, twenty thousand, two hundred twelve".