211111111011022 has 4 divisors (see below), whose sum is σ = 316666666516536. Its totient is φ = 105555555505510.

The previous prime is 211111111011001. The next prime is 211111111011029. The reversal of 211111111011022 is 220110111111112.

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

It is a junction number, because it is equal to n+sod(n) for n = 211111111010987 and 211111111011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211111111011029) 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 as a sum of consecutive naturals, namely, 52777777752754 + ... + 52777777752757.

It is an arithmetic number, because the mean of its divisors is an integer number (79166666629134).

Almost surely, 2^{211111111011022} is an apocalyptic number.

211111111011022 is a deficient number, since it is larger than the sum of its proper divisors (105555555505514).

211111111011022 is a wasteful number, since it uses less digits than its factorization.

211111111011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105555555505513.

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

Adding to 211111111011022 its reverse (220110111111112), we get a palindrome (431221222122134).

The spelling of 211111111011022 in words is "two hundred eleven trillion, one hundred eleven billion, one hundred eleven million, eleven thousand, twenty-two".