12220201212 has 12 divisors (see below), whose sum is σ = 28513802856. Its totient is φ = 4073400400.

The previous prime is 12220201193. The next prime is 12220201219. The reversal of 12220201212 is 21210202221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12220201191 and 12220201200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220201219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509175039 + ... + 509175062.

It is an arithmetic number, because the mean of its divisors is an integer number (2376150238).

Almost surely, 2^12220201212 is an apocalyptic number.

12220201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12220201212 is an abundant number, since it is smaller than the sum of its proper divisors (16293601644).

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

12220201212 is a wasteful number, since it uses less digits than its factorization.

12220201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018350108 (or 1018350106 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12220201212 its reverse (21210202221), we get a palindrome (33430403433).

The spelling of 12220201212 in words is "twelve billion, two hundred twenty million, two hundred one thousand, two hundred twelve".