12221012020212 has 144 divisors (see below), whose sum is σ = 31276204831872. Its totient is φ = 4023222854400.

The previous prime is 12221012020171. The next prime is 12221012020223. The reversal of 12221012020212 is 21202021012221.

It is a happy number.

12221012020212 is a `hidden beast` number, since 122 + 210 + 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 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, 3388135713 + ... + 3388139319.

It is an arithmetic number, because the mean of its divisors is an integer number (217195866888).

Almost surely, 2^{12221012020212} is an apocalyptic number.

12221012020212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221012020212 is an abundant number, since it is smaller than the sum of its proper divisors (19055192811660).

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

12221012020212 is a wasteful number, since it uses less digits than its factorization.

12221012020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798 (or 5793 counting only the distinct ones).

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

Adding to 12221012020212 its reverse (21202021012221), we get a palindrome (33423033032433).

The spelling of 12221012020212 in words is "twelve trillion, two hundred twenty-one billion, twelve million, twenty thousand, two hundred twelve".