212100222210222 has 16 divisors (see below), whose sum is σ = 424378904879952. Its totient is φ = 70670330660160.

The previous prime is 212100222210197. The next prime is 212100222210223. The reversal of 212100222210222 is 222012222001212.

It is a super-2 number, since 2×212100222210222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100222210223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7435837029 + ... + 7435865552.

It is an arithmetic number, because the mean of its divisors is an integer number (26523681554997).

Almost surely, 2^{212100222210222} is an apocalyptic number.

212100222210222 is an abundant number, since it is smaller than the sum of its proper divisors (212278682669730).

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

212100222210222 is a wasteful number, since it uses less digits than its factorization.

212100222210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14871704963.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212100222210222 its reverse (222012222001212), we get a palindrome (434112444211434).

The spelling of 212100222210222 in words is "two hundred twelve trillion, one hundred billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty-two".