212102100111 has 8 divisors (see below), whose sum is σ = 308512145664. Its totient is φ = 128546727320.

The previous prime is 212102100061. The next prime is 212102100139. The reversal of 212102100111 is 111001201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212102100111 - 2⁶ = 212102100047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102100211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213668151 + ... + 3213668216.

It is an arithmetic number, because the mean of its divisors is an integer number (38564018208).

Almost surely, 2^212102100111 is an apocalyptic number.

212102100111 is a deficient number, since it is larger than the sum of its proper divisors (96410045553).

212102100111 is a wasteful number, since it uses less digits than its factorization.

212102100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427336381.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212102100111 its reverse (111001201212), we get a palindrome (323103301323).

It can be divided in two parts, 212102 and 100111, that added together give a palindrome (312213).

The spelling of 212102100111 in words is "two hundred twelve billion, one hundred two million, one hundred thousand, one hundred eleven".