12100111122212 has 12 divisors (see below), whose sum is σ = 21286059357696. Its totient is φ = 6018379877160.

The previous prime is 12100111122199. The next prime is 12100111122217. The reversal of 12100111122212 is 21222111100121.

It is not an unprimeable number, because it can be changed into a prime (12100111122217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7918920128 + ... + 7918921655.

It is an arithmetic number, because the mean of its divisors is an integer number (1773838279808).

Almost surely, 2^{12100111122212} is an apocalyptic number.

It is an amenable number.

12100111122212 is a deficient number, since it is larger than the sum of its proper divisors (9185948235484).

12100111122212 is a wasteful number, since it uses less digits than its factorization.

12100111122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15837841978 (or 15837841976 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12100111122212 its reverse (21222111100121), we get a palindrome (33322222222333).

The spelling of 12100111122212 in words is "twelve trillion, one hundred billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twelve".