21030110213211 has 12 divisors (see below), whose sum is σ = 33138355487640. Its totient is φ = 12745521341280.

The previous prime is 21030110213197. The next prime is 21030110213219. The reversal of 21030110213211 is 11231201103012.

21030110213211 is a `hidden beast` number, since 2 + 10 + 301 + 10 + 21 + 321 + 1 = 666.

It is not a de Polignac number, because 21030110213211 - 2⁵ = 21030110213179 is a prime.

It is a super-2 number, since 2×21030110213211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21030110213219) 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 11 ways as a sum of consecutive naturals, for example, 106212677746 + ... + 106212677943.

It is an arithmetic number, because the mean of its divisors is an integer number (2761529623970).

Almost surely, 2^{21030110213211} is an apocalyptic number.

21030110213211 is a deficient number, since it is larger than the sum of its proper divisors (12108245274429).

21030110213211 is a wasteful number, since it uses less digits than its factorization.

21030110213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212425355706 (or 212425355703 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21030110213211 its reverse (11231201103012), we get a palindrome (32261311316223).

The spelling of 21030110213211 in words is "twenty-one trillion, thirty billion, one hundred ten million, two hundred thirteen thousand, two hundred eleven".