21112032111 has 8 divisors (see below), whose sum is σ = 28150162560. Its totient is φ = 14074294872.

The previous prime is 21112032089. The next prime is 21112032173. The reversal of 21112032111 is 11123021112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21112032111 - 2⁹ = 21112031599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112032211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66406 + ... + 215948.

It is an arithmetic number, because the mean of its divisors is an integer number (3518770320).

Almost surely, 2^21112032111 is an apocalyptic number.

21112032111 is a deficient number, since it is larger than the sum of its proper divisors (7038130449).

21112032111 is a wasteful number, since it uses less digits than its factorization.

21112032111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196605.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21112032111 its reverse (11123021112), we get a palindrome (32235053223).

The spelling of 21112032111 in words is "twenty-one billion, one hundred twelve million, thirty-two thousand, one hundred eleven".