12210012112 has 40 divisors (see below), whose sum is σ = 23852810376. Its totient is φ = 6054537216.

The previous prime is 12210012103. The next prime is 12210012127. The reversal of 12210012112 is 21121001221.

It can be written as a sum of positive squares in 4 ways, for example, as 6059688336 + 6150323776 = 77844^2 + 78424^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12210012092 and 12210012101.

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, 3007588 + ... + 3011644.

Almost surely, 2^12210012112 is an apocalyptic number.

It is an amenable number.

12210012112 is a deficient number, since it is larger than the sum of its proper divisors (11642798264).

12210012112 is a wasteful number, since it uses less digits than its factorization.

12210012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575 (or 5569 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12210012112 its reverse (21121001221), we get a palindrome (33331013333).

The spelling of 12210012112 in words is "twelve billion, two hundred ten million, twelve thousand, one hundred twelve".