212121020211222 has 16 divisors (see below), whose sum is σ = 438871076299440. Its totient is φ = 68268834090912.

The previous prime is 212121020211209. The next prime is 212121020211239. The reversal of 212121020211222 is 222112020121212.

It is a super-3 number, since 3×212121020211222³ (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, 609543161353 + ... + 609543161700.

It is an arithmetic number, because the mean of its divisors is an integer number (27429442268715).

Almost surely, 2^{212121020211222} is an apocalyptic number.

212121020211222 is an abundant number, since it is smaller than the sum of its proper divisors (226750056088218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212121020211222 is a wasteful number, since it uses less digits than its factorization.

212121020211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219086323087.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212121020211222 its reverse (222112020121212), we get a palindrome (434233040332434).

The spelling of 212121020211222 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty million, two hundred eleven thousand, two hundred twenty-two".