212201122221222 has 32 divisors (see below), whose sum is σ = 426228077594592. Its totient is φ = 70429408099584.

The previous prime is 212201122221107. The next prime is 212201122221259. The reversal of 212201122221222 is 222122221102212.

It is a happy number.

212201122221222 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-2 number, since 2×212201122221222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212201122221192 and 212201122221201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145669608 + ... + 147119124.

It is an arithmetic number, because the mean of its divisors is an integer number (13319627424831).

Almost surely, 2^{212201122221222} is an apocalyptic number.

212201122221222 is an abundant number, since it is smaller than the sum of its proper divisors (214026955373370).

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

212201122221222 is a wasteful number, since it uses less digits than its factorization.

212201122221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554472.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 212201122221222 its reverse (222122221102212), we get a palindrome (434323343323434).

The spelling of 212201122221222 in words is "two hundred twelve trillion, two hundred one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".