212120110221212 has 24 divisors (see below), whose sum is σ = 374272038206976. Its totient is φ = 105185862387648.

The previous prime is 212120110221169. The next prime is 212120110221233. The reversal of 212120110221212 is 212122011021212.

212120110221212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212120110221212³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76158743 + ... + 78894830.

It is an arithmetic number, because the mean of its divisors is an integer number (15594668258624).

Almost surely, 2^{212120110221212} is an apocalyptic number.

It is an amenable number.

212120110221212 is a deficient number, since it is larger than the sum of its proper divisors (162151927985764).

212120110221212 is a wasteful number, since it uses less digits than its factorization.

212120110221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155056397 (or 155056395 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212120110221212 its reverse (212122011021212), we get a palindrome (424242121242424).

The spelling of 212120110221212 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred ten million, two hundred twenty-one thousand, two hundred twelve".