212120021110 has 16 divisors (see below), whose sum is σ = 381983468832. Its totient is φ = 84810801600.

The previous prime is 212120021093. The next prime is 212120021159. The reversal of 212120021110 is 11120021212.

212120021110 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4626906 + ... + 4672525.

It is an arithmetic number, because the mean of its divisors is an integer number (23873966802).

Almost surely, 2^212120021110 is an apocalyptic number.

212120021110 is a deficient number, since it is larger than the sum of its proper divisors (169863447722).

212120021110 is a wasteful number, since it uses less digits than its factorization.

212120021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9301719.

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

Adding to 212120021110 its reverse (11120021212), we get a palindrome (223240042322).

The spelling of 212120021110 in words is "two hundred twelve billion, one hundred twenty million, twenty-one thousand, one hundred ten".