212220212121212 has 24 divisors (see below), whose sum is σ = 374682519436176. Its totient is φ = 105168116603648.

The previous prime is 212220212121163. The next prime is 212220212121221. The reversal of 212220212121212 is 212121212022212.

212220212121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 9498818 + ... + 22686294.

It is an arithmetic number, because the mean of its divisors is an integer number (15611771643174).

Almost surely, 2^{212220212121212} is an apocalyptic number.

It is an amenable number.

212220212121212 is a deficient number, since it is larger than the sum of its proper divisors (162462307314964).

212220212121212 is a wasteful number, since it uses less digits than its factorization.

212220212121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13223197 (or 13223195 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212220212121212 its reverse (212121212022212), we get a palindrome (424341424143424).

The spelling of 212220212121212 in words is "two hundred twelve trillion, two hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".