21102010011211 has 8 divisors (see below), whose sum is σ = 21501435083040. Its totient is φ = 20702632122432.

The previous prime is 21102010011193. The next prime is 21102010011293. The reversal of 21102010011211 is 11211001020112.

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 21102010011211 - 2⁷ = 21102010011083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21102010011191 and 21102010011200.

It is not an unprimeable number, because it can be changed into a prime (21102010071211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10892175 + ... + 12682408.

It is an arithmetic number, because the mean of its divisors is an integer number (2687679385380).

Almost surely, 2^{21102010011211} is an apocalyptic number.

21102010011211 is a deficient number, since it is larger than the sum of its proper divisors (399425071829).

21102010011211 is a wasteful number, since it uses less digits than its factorization.

21102010011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23591525.

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

Adding to 21102010011211 its reverse (11211001020112), we get a palindrome (32313011031323).

The spelling of 21102010011211 in words is "twenty-one trillion, one hundred two billion, ten million, eleven thousand, two hundred eleven".