12213222212 has 24 divisors (see below), whose sum is σ = 22793208480. Its totient is φ = 5706046080.

The previous prime is 12213222193. The next prime is 12213222247. The reversal of 12213222212 is 21222231221.

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, 636614 + ... + 655517.

It is an arithmetic number, because the mean of its divisors is an integer number (949717020).

Almost surely, 2^12213222212 is an apocalyptic number.

It is an amenable number.

12213222212 is a deficient number, since it is larger than the sum of its proper divisors (10579986268).

12213222212 is a wasteful number, since it uses less digits than its factorization.

12213222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292291 (or 1292289 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

Adding to 12213222212 its reverse (21222231221), we get a palindrome (33435453433).

Subtracting 12213222212 from its reverse (21222231221), we obtain a palindrome (9009009009).

The spelling of 12213222212 in words is "twelve billion, two hundred thirteen million, two hundred twenty-two thousand, two hundred twelve".