12102111212 has 6 divisors (see below), whose sum is σ = 21178694628. Its totient is φ = 6051055604.

The previous prime is 12102111193. The next prime is 12102111247. The reversal of 12102111212 is 21211120121.

It is a super-2 number, since 2×12102111212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1512763898 + ... + 1512763905.

It is an arithmetic number, because the mean of its divisors is an integer number (3529782438).

Almost surely, 2^12102111212 is an apocalyptic number.

It is an amenable number.

12102111212 is a deficient number, since it is larger than the sum of its proper divisors (9076583416).

12102111212 is a wasteful number, since it uses less digits than its factorization.

12102111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025527807 (or 3025527805 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12102111212 its reverse (21211120121), we get a palindrome (33313231333).

The spelling of 12102111212 in words is "twelve billion, one hundred two million, one hundred eleven thousand, two hundred twelve".