12220211212 has 24 divisors (see below), whose sum is σ = 23898509712. Its totient is φ = 5419161600.

The previous prime is 12220211173. The next prime is 12220211231. The reversal of 12220211212 is 21211202221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3385173 + ... + 3388780.

It is an arithmetic number, because the mean of its divisors is an integer number (995771238).

Almost surely, 2^12220211212 is an apocalyptic number.

It is an amenable number.

12220211212 is a deficient number, since it is larger than the sum of its proper divisors (11678298500).

12220211212 is a wasteful number, since it uses less digits than its factorization.

12220211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774009 (or 6774007 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12220211212 its reverse (21211202221), we get a palindrome (33431413433).

The spelling of 12220211212 in words is "twelve billion, two hundred twenty million, two hundred eleven thousand, two hundred twelve".