211101020211111 has 8 divisors (see below), whose sum is σ = 281468180976000. Its totient is φ = 140733936460152.

The previous prime is 211101020211089. The next prime is 211101020211119. The reversal of 211101020211111 is 111112020101112.

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

It is not a de Polignac number, because 211101020211111 - 2⁶ = 211101020211047 is a prime.

It is a super-2 number, since 2×211101020211111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101020211119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12521361 + ... + 24062138.

It is an arithmetic number, because the mean of its divisors is an integer number (35183522622000).

Almost surely, 2^{211101020211111} is an apocalyptic number.

211101020211111 is a deficient number, since it is larger than the sum of its proper divisors (70367160764889).

211101020211111 is a wasteful number, since it uses less digits than its factorization.

211101020211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38506965.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 211101020211111 its reverse (111112020101112), we get a palindrome (322213040312223).

The spelling of 211101020211111 in words is "two hundred eleven trillion, one hundred one billion, twenty million, two hundred eleven thousand, one hundred eleven".