12101212012 has 24 divisors (see below), whose sum is σ = 21772900800. Its totient is φ = 5882112000.

The previous prime is 12101211989. The next prime is 12101212031. The reversal of 12101212012 is 21021210121.

It is a junction number, because it is equal to n+sod(n) for n = 12101211983 and 12101212001.

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, 187989 + ... + 244012.

It is an arithmetic number, because the mean of its divisors is an integer number (907204200).

Almost surely, 2^12101212012 is an apocalyptic number.

It is an amenable number.

12101212012 is a deficient number, since it is larger than the sum of its proper divisors (9671688788).

12101212012 is a wasteful number, since it uses less digits than its factorization.

12101212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432201 (or 432199 counting only the distinct ones).

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

Adding to 12101212012 its reverse (21021210121), we get a palindrome (33122422133).

The spelling of 12101212012 in words is "twelve billion, one hundred one million, two hundred twelve thousand, twelve".