21102211000111 has 8 divisors (see below), whose sum is σ = 21114302248224. Its totient is φ = 21090123002880.

The previous prime is 21102211000097. The next prime is 21102211000133. The reversal of 21102211000111 is 11100011220112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21102211000111 - 2⁷ = 21102210999983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21102211000091 and 21102211000100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102211009111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12233355 + ... + 13851331.

It is an arithmetic number, because the mean of its divisors is an integer number (2639287781028).

Almost surely, 2^{21102211000111} is an apocalyptic number.

21102211000111 is a deficient number, since it is larger than the sum of its proper divisors (12091248113).

21102211000111 is a wasteful number, since it uses less digits than its factorization.

21102211000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625441.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21102211000111 its reverse (11100011220112), we get a palindrome (32202222220223).

The spelling of 21102211000111 in words is "twenty-one trillion, one hundred two billion, two hundred eleven million, one hundred eleven", and thus it is an aban number.