212202212100122 has 4 divisors (see below), whose sum is σ = 318303318150186. Its totient is φ = 106101106050060.

The previous prime is 212202212100077. The next prime is 212202212100157. The reversal of 212202212100122 is 221001212202212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 210325725817321 + 1876486282801 = 14502611^2 + 1369849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212202212100094 and 212202212100103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53050553025029 + ... + 53050553025032.

Almost surely, 2^{212202212100122} is an apocalyptic number.

212202212100122 is a deficient number, since it is larger than the sum of its proper divisors (106101106050064).

212202212100122 is a wasteful number, since it uses less digits than its factorization.

212202212100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106101106050063.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212202212100122 its reverse (221001212202212), we get a palindrome (433203424302334).

The spelling of 212202212100122 in words is "two hundred twelve trillion, two hundred two billion, two hundred twelve million, one hundred thousand, one hundred twenty-two".