12212112101 has 32 divisors (see below), whose sum is σ = 14540832768. Its totient is φ = 10039982400.

The previous prime is 12212112091. The next prime is 12212112119. The reversal of 12212112101 is 10121121221.

It is a de Polignac number, because none of the positive numbers 2^k-12212112101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212112151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3859346 + ... + 3862508.

It is an arithmetic number, because the mean of its divisors is an integer number (454401024).

Almost surely, 2^12212112101 is an apocalyptic number.

It is an amenable number.

12212112101 is a deficient number, since it is larger than the sum of its proper divisors (2328720667).

12212112101 is a wasteful number, since it uses less digits than its factorization.

12212112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441.

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

Adding to 12212112101 its reverse (10121121221), we get a palindrome (22333233322).

The spelling of 12212112101 in words is "twelve billion, two hundred twelve million, one hundred twelve thousand, one hundred one".