211011112021111 has 8 divisors (see below), whose sum is σ = 223423871629824. Its totient is φ = 198598390329600.

The previous prime is 211011112021051. The next prime is 211011112021139. The reversal of 211011112021111 is 111120211110112.

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 211011112021111 - 2²³ = 211011103632503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011112021141) 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, 2403786 + ... + 20683336.

It is an arithmetic number, because the mean of its divisors is an integer number (27927983953728).

Almost surely, 2^{211011112021111} is an apocalyptic number.

211011112021111 is a deficient number, since it is larger than the sum of its proper divisors (12412759608713).

211011112021111 is a wasteful number, since it uses less digits than its factorization.

211011112021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18958601.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 211011112021111 its reverse (111120211110112), we get a palindrome (322131323131223).

The spelling of 211011112021111 in words is "two hundred eleven trillion, eleven billion, one hundred twelve million, twenty-one thousand, one hundred eleven".