21120210210211 has 32 divisors (see below), whose sum is σ = 25854854901120. Its totient is φ = 16839890681856.

The previous prime is 21120210210181. The next prime is 21120210210217. The reversal of 21120210210211 is 11201201202112.

It is a cyclic number.

It is not a de Polignac number, because 21120210210211 - 2⁹ = 21120210209699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120210210217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25831371 + ... + 26636443.

It is an arithmetic number, because the mean of its divisors is an integer number (807964215660).

Almost surely, 2^{21120210210211} is an apocalyptic number.

21120210210211 is a deficient number, since it is larger than the sum of its proper divisors (4734644690909).

21120210210211 is a wasteful number, since it uses less digits than its factorization.

21120210210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807663.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21120210210211 its reverse (11201201202112), we get a palindrome (32321411412323).

The spelling of 21120210210211 in words is "twenty-one trillion, one hundred twenty billion, two hundred ten million, two hundred ten thousand, two hundred eleven".