101211111212 has 12 divisors (see below), whose sum is σ = 177146519256. Its totient is φ = 50597820000.

The previous prime is 101211111187. The next prime is 101211111289. The reversal of 101211111212 is 212111112101.

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, 1904414 + ... + 1956837.

It is an arithmetic number, because the mean of its divisors is an integer number (14762209938).

Almost surely, 2^101211111212 is an apocalyptic number.

It is an amenable number.

101211111212 is a deficient number, since it is larger than the sum of its proper divisors (75935408044).

101211111212 is a wasteful number, since it uses less digits than its factorization.

101211111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867808 (or 3867806 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 101211111212 its reverse (212111112101), we get a palindrome (313322223313).

The spelling of 101211111212 in words is "one hundred one billion, two hundred eleven million, one hundred eleven thousand, two hundred twelve".