212212111101 has 32 divisors (see below), whose sum is σ = 307570176000. Its totient is φ = 129654224640.

The previous prime is 212212111093. The next prime is 212212111117. The reversal of 212212111101 is 101111212212.

It is a happy number.

It is not a de Polignac number, because 212212111101 - 2³ = 212212111093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212111151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4746885 + ... + 4791381.

It is an arithmetic number, because the mean of its divisors is an integer number (9611568000).

Almost surely, 2^212212111101 is an apocalyptic number.

It is an amenable number.

212212111101 is a deficient number, since it is larger than the sum of its proper divisors (95358064899).

212212111101 is a wasteful number, since it uses less digits than its factorization.

212212111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47249.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212212111101 its reverse (101111212212), we get a palindrome (313323323313).

It can be divided in two parts, 212212111 and 101, that added together give a palindrome (212212212).

The spelling of 212212111101 in words is "two hundred twelve billion, two hundred twelve million, one hundred eleven thousand, one hundred one".