211011112021110 has 32 divisors (see below), whose sum is σ = 506453398808832. Its totient is φ = 56266659876960.

The previous prime is 211011112021051. The next prime is 211011112021139. The reversal of 211011112021110 is 11120211110112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 211011112021110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185046826 + ... + 186183645.

It is an arithmetic number, because the mean of its divisors is an integer number (15826668712776).

Almost surely, 2^{211011112021110} is an apocalyptic number.

211011112021110 is an abundant number, since it is smaller than the sum of its proper divisors (295442286787722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211011112021110 is a wasteful number, since it uses less digits than its factorization.

211011112021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371249428.

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

Adding to 211011112021110 its reverse (11120211110112), we get a palindrome (222131323131222).

The spelling of 211011112021110 in words is "two hundred eleven trillion, eleven billion, one hundred twelve million, twenty-one thousand, one hundred ten".