12120202111212 has 72 divisors (see below), whose sum is σ = 34058202389120. Its totient is φ = 3608993180160.

The previous prime is 12120202111169. The next prime is 12120202111223. The reversal of 12120202111212 is 21211120202121.

12120202111212 is a `hidden beast` number, since 121 + 20 + 202 + 111 + 212 = 666.

It is a super-2 number, since 2×12120202111212² (a number of 27 digits) contains 22 as substring.

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

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 23 ways as a sum of consecutive naturals, for example, 417693037 + ... + 417722052.

Almost surely, 2^{12120202111212} is an apocalyptic number.

12120202111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12120202111212 is an abundant number, since it is smaller than the sum of its proper divisors (21938000277908).

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

12120202111212 is a wasteful number, since it uses less digits than its factorization.

12120202111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835415143 (or 835415138 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12120202111212 its reverse (21211120202121), we get a palindrome (33331322313333).

The spelling of 12120202111212 in words is "twelve trillion, one hundred twenty billion, two hundred two million, one hundred eleven thousand, two hundred twelve".