210021212110 has 16 divisors (see below), whose sum is σ = 390232962432. Its totient is φ = 81298533600.

The previous prime is 210021212083. The next prime is 210021212129. The reversal of 210021212110 is 11212120012.

It is a super-2 number, since 2×210021212110² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 338743581 + ... + 338744200.

It is an arithmetic number, because the mean of its divisors is an integer number (24389560152).

Almost surely, 2^210021212110 is an apocalyptic number.

210021212110 is a deficient number, since it is larger than the sum of its proper divisors (180211750322).

210021212110 is a wasteful number, since it uses less digits than its factorization.

210021212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677487819.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210021212110 its reverse (11212120012), we get a palindrome (221233332122).

The spelling of 210021212110 in words is "two hundred ten billion, twenty-one million, two hundred twelve thousand, one hundred ten".