211120201021111 has 16 divisors (see below), whose sum is σ = 225784635824448. Its totient is φ = 196705840960000.

The previous prime is 211120201021087. The next prime is 211120201021123. The reversal of 211120201021111 is 111120102021112.

It is a cyclic number.

It is not a de Polignac number, because 211120201021111 - 2²⁵ = 211120167466679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120201021181) 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 in 15 ways as a sum of consecutive naturals, for example, 3185661 + ... + 20793961.

It is an arithmetic number, because the mean of its divisors is an integer number (14111539739028).

Almost surely, 2^{211120201021111} is an apocalyptic number.

211120201021111 is a deficient number, since it is larger than the sum of its proper divisors (14664434803337).

211120201021111 is a wasteful number, since it uses less digits than its factorization.

211120201021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17615402.

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

Adding to 211120201021111 its reverse (111120102021112), we get a palindrome (322240303042223).

The spelling of 211120201021111 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred one million, twenty-one thousand, one hundred eleven".