212101010011111 has 8 divisors (see below), whose sum is σ = 228425461557104. Its totient is φ = 195777842641920.

The previous prime is 212101010011109. The next prime is 212101010011117. The reversal of 212101010011111 is 111110010101212.

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

It is a cyclic number.

It is not a de Polignac number, because 212101010011111 - 2¹ = 212101010011109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212101010011091 and 212101010011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101010011117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320701146 + ... + 321361831.

It is an arithmetic number, because the mean of its divisors is an integer number (28553182694638).

Almost surely, 2^{212101010011111} is an apocalyptic number.

212101010011111 is a deficient number, since it is larger than the sum of its proper divisors (16324451545993).

212101010011111 is a wasteful number, since it uses less digits than its factorization.

212101010011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642088401.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 212101010011111 its reverse (111110010101212), we get a palindrome (323211020112323).

The spelling of 212101010011111 in words is "two hundred twelve trillion, one hundred one billion, ten million, eleven thousand, one hundred eleven".