212122212210122 has 4 divisors (see below), whose sum is σ = 318183318315186. Its totient is φ = 106061106105060.

The previous prime is 212122212210109. The next prime is 212122212210131. The reversal of 212122212210122 is 221012212221212.

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., 159130378566721 + 52991833643401 = 12614689^2 + 7279549^2 .

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, 53030553052529 + ... + 53030553052532.

Almost surely, 2^{212122212210122} is an apocalyptic number.

212122212210122 is a deficient number, since it is larger than the sum of its proper divisors (106061106105064).

212122212210122 is a wasteful number, since it uses less digits than its factorization.

212122212210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106061106105063.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212122212210122 its reverse (221012212221212), we get a palindrome (433134424431334).

The spelling of 212122212210122 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twelve million, two hundred ten thousand, one hundred twenty-two".