12212100112 has 20 divisors (see below), whose sum is σ = 23926800060. Its totient is φ = 6037442048.

The previous prime is 12212100097. The next prime is 12212100149. The reversal of 12212100112 is 21100121221.

It can be written as a sum of positive squares in 2 ways, for example, as 5290525696 + 6921574416 = 72736^2 + 83196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12212100092 and 12212100101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286533 + ... + 4289380.

It is an arithmetic number, because the mean of its divisors is an integer number (1196340003).

Almost surely, 2^12212100112 is an apocalyptic number.

It is an amenable number.

12212100112 is a deficient number, since it is larger than the sum of its proper divisors (11714699948).

12212100112 is an equidigital number, since it uses as much as digits as its factorization.

12212100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8576010 (or 8576004 counting only the distinct ones).

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

Adding to 12212100112 its reverse (21100121221), we get a palindrome (33312221333).

The spelling of 12212100112 in words is "twelve billion, two hundred twelve million, one hundred thousand, one hundred twelve".