211101020001111 has 16 divisors (see below), whose sum is σ = 289179367298784. Its totient is φ = 136881082404864.

The previous prime is 211101020001107. The next prime is 211101020001161. The reversal of 211101020001111 is 111100020101112.

It is not a de Polignac number, because 211101020001111 - 2² = 211101020001107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101020001101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342113610 + ... + 342730103.

It is an arithmetic number, because the mean of its divisors is an integer number (18073710456174).

Almost surely, 2^{211101020001111} is an apocalyptic number.

211101020001111 is a deficient number, since it is larger than the sum of its proper divisors (78078347297673).

211101020001111 is a wasteful number, since it uses less digits than its factorization.

211101020001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684846530.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 211101020001111 its reverse (111100020101112), we get a palindrome (322201040102223).

The spelling of 211101020001111 in words is "two hundred eleven trillion, one hundred one billion, twenty million, one thousand, one hundred eleven".