12220012021212 has 18 divisors (see below), whose sum is σ = 30889474831488. Its totient is φ = 4073337340392.

The previous prime is 12220012021193. The next prime is 12220012021213. The reversal of 12220012021212 is 21212021002221.

It is a happy number.

12220012021212 is a `hidden beast` number, since 122 + 200 + 120 + 212 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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 (12220012021213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169722389148 + ... + 169722389219.

Almost surely, 2^{12220012021212} is an apocalyptic number.

12220012021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12220012021212 is an abundant number, since it is smaller than the sum of its proper divisors (18669462810276).

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

12220012021212 is a wasteful number, since it uses less digits than its factorization.

12220012021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339444778377 (or 339444778372 counting only the distinct ones).

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

Adding to 12220012021212 its reverse (21212021002221), we get a palindrome (33432033023433).

The spelling of 12220012021212 in words is "twelve trillion, two hundred twenty billion, twelve million, twenty-one thousand, two hundred twelve".