12112220212 has 24 divisors (see below), whose sum is σ = 21815388000. Its totient is φ = 5881726176.

The previous prime is 12112220191. The next prime is 12112220249. The reversal of 12112220212 is 21202221121.

It is a happy number.

It is a congruent 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, 289587 + ... + 328762.

It is an arithmetic number, because the mean of its divisors is an integer number (908974500).

Almost surely, 2^12112220212 is an apocalyptic number.

It is an amenable number.

12112220212 is a deficient number, since it is larger than the sum of its proper divisors (9703167788).

12112220212 is a wasteful number, since it uses less digits than its factorization.

12112220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618495 (or 618493 counting only the distinct ones).

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

Adding to 12112220212 its reverse (21202221121), we get a palindrome (33314441333).

Subtracting 12112220212 from its reverse (21202221121), we obtain a palindrome (9090000909).

It can be divided in two parts, 12112 and 220212, that added together give a square (232324 = 482²).

The spelling of 12112220212 in words is "twelve billion, one hundred twelve million, two hundred twenty thousand, two hundred twelve".