12201122020212 has 144 divisors (see below), whose sum is σ = 32327977281600. Its totient is φ = 4023419351040.

The previous prime is 12201122020189. The next prime is 12201122020223. The reversal of 12201122020212 is 21202022110221.

It is a happy number.

12201122020212 is a `hidden beast` number, since 1 + 220 + 11 + 220 + 2 + 0 + 212 = 666.

It is a super-2 number, since 2×12201122020212² (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 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 47 ways as a sum of consecutive naturals, for example, 67822839 + ... + 68002497.

Almost surely, 2^{12201122020212} is an apocalyptic number.

12201122020212 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 12201122020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16163988640800).

12201122020212 is an abundant number, since it is smaller than the sum of its proper divisors (20126855261388).

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

12201122020212 is a wasteful number, since it uses less digits than its factorization.

12201122020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180428 (or 180414 counting only the distinct ones).

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

Adding to 12201122020212 its reverse (21202022110221), we get a palindrome (33403144130433).

Subtracting 12201122020212 from its reverse (21202022110221), we obtain a palindrome (9000900090009).

The spelling of 12201122020212 in words is "twelve trillion, two hundred one billion, one hundred twenty-two million, twenty thousand, two hundred twelve".