21211011021110 has 64 divisors (see below), whose sum is σ = 38809979872704. Its totient is φ = 8345509056000.

The previous prime is 21211011021103. The next prime is 21211011021173. The reversal of 21211011021110 is 1112011011212.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 431470652 + ... + 431519808.

It is an arithmetic number, because the mean of its divisors is an integer number (606405935511).

Almost surely, 2^{21211011021110} is an apocalyptic number.

21211011021110 is a deficient number, since it is larger than the sum of its proper divisors (17598968851594).

21211011021110 is a wasteful number, since it uses less digits than its factorization.

21211011021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52049.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21211011021110 its reverse (1112011011212), we get a palindrome (22323022032322).

The spelling of 21211011021110 in words is "twenty-one trillion, two hundred eleven billion, eleven million, twenty-one thousand, one hundred ten".