211012001111 has 4 divisors (see below), whose sum is σ = 211026505272. Its totient is φ = 210997496952.

The previous prime is 211012001107. The next prime is 211012001117. The reversal of 211012001111 is 111100210112.

211012001111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211012001111 - 2² = 211012001107 is a prime.

It is a super-2 number, since 2×211012001111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211012001092 and 211012001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012001117) 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 3 ways as a sum of consecutive naturals, for example, 7230236 + ... + 7259361.

It is an arithmetic number, because the mean of its divisors is an integer number (52756626318).

Almost surely, 2^211012001111 is an apocalyptic number.

211012001111 is a deficient number, since it is larger than the sum of its proper divisors (14504161).

211012001111 is a wasteful number, since it uses less digits than its factorization.

211012001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14504160.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211012001111 its reverse (111100210112), we get a palindrome (322112211223).

The spelling of 211012001111 in words is "two hundred eleven billion, twelve million, one thousand, one hundred eleven".