212212211102121 has 32 divisors (see below), whose sum is σ = 285497037665280. Its totient is φ = 140205715272000.

The previous prime is 212212211102093. The next prime is 212212211102149. The reversal of 212212211102121 is 121201112212212.

It is an interprime number because it is at equal distance from previous prime (212212211102093) and next prime (212212211102149).

It is not a de Polignac number, because 212212211102121 - 2¹⁷ = 212212210971049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212212211100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685575375 + ... + 685884843.

It is an arithmetic number, because the mean of its divisors is an integer number (8921782427040).

Almost surely, 2^{212212211102121} is an apocalyptic number.

It is an amenable number.

212212211102121 is a deficient number, since it is larger than the sum of its proper divisors (73284826563159).

212212211102121 is a wasteful number, since it uses less digits than its factorization.

212212211102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313197.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212212211102121 its reverse (121201112212212), we get a palindrome (333413323314333).

The spelling of 212212211102121 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred eleven million, one hundred two thousand, one hundred twenty-one".