211120111020111 has 32 divisors (see below), whose sum is σ = 285446383825920. Its totient is φ = 138775283337600.

The previous prime is 211120111020083. The next prime is 211120111020121. The reversal of 211120111020111 is 111020111021112.

It is not a de Polignac number, because 211120111020111 - 2⁵ = 211120111020079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120111020121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 540845796 + ... + 541236006.

It is an arithmetic number, because the mean of its divisors is an integer number (8920199494560).

Almost surely, 2^{211120111020111} is an apocalyptic number.

211120111020111 is a deficient number, since it is larger than the sum of its proper divisors (74326272805809).

211120111020111 is a wasteful number, since it uses less digits than its factorization.

211120111020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393407.

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

Adding to 211120111020111 its reverse (111020111021112), we get a palindrome (322140222041223).

The spelling of 211120111020111 in words is "two hundred eleven trillion, one hundred twenty billion, one hundred eleven million, twenty thousand, one hundred eleven".