212012221022122 has 16 divisors (see below), whose sum is σ = 318403741125960. Its totient is φ = 105877642088448.

The previous prime is 212012221022113. The next prime is 212012221022141. The reversal of 212012221022122 is 221220122210212.

It can be written as a sum of positive squares in 4 ways, for example, as 192943462187281 + 19068758834841 = 13890409^2 + 4366779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212012221022093 and 212012221022102.

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, 527800938 + ... + 528202474.

Almost surely, 2^{212012221022122} is an apocalyptic number.

212012221022122 is a deficient number, since it is larger than the sum of its proper divisors (106391520103838).

212012221022122 is a wasteful number, since it uses less digits than its factorization.

212012221022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720825.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212012221022122 its reverse (221220122210212), we get a palindrome (433232343232334).

The spelling of 212012221022122 in words is "two hundred twelve trillion, twelve billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-two".