212101012122222 has 16 divisors (see below), whose sum is σ = 428093785936080. Its totient is φ = 70051710425472.

The previous prime is 212101012122191. The next prime is 212101012122257. The reversal of 212101012122222 is 222221210101212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162156736443 + ... + 162156737750.

It is an arithmetic number, because the mean of its divisors is an integer number (26755861621005).

Almost surely, 2^{212101012122222} is an apocalyptic number.

212101012122222 is an abundant number, since it is smaller than the sum of its proper divisors (215992773813858).

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

212101012122222 is a wasteful number, since it uses less digits than its factorization.

212101012122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324313474307.

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

Adding to 212101012122222 its reverse (222221210101212), we get a palindrome (434322222223434).

The spelling of 212101012122222 in words is "two hundred twelve trillion, one hundred one billion, twelve million, one hundred twenty-two thousand, two hundred twenty-two".