212222112002121 has 32 divisors (see below), whose sum is σ = 304870106813440. Its totient is φ = 130537842499584.

The previous prime is 212222112002119. The next prime is 212222112002149. The reversal of 212222112002121 is 121200211222212.

It is not a de Polignac number, because 212222112002121 - 2¹ = 212222112002119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212222112002171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 740936025 + ... + 741222393.

It is an arithmetic number, because the mean of its divisors is an integer number (9527190837920).

Almost surely, 2^{212222112002121} is an apocalyptic number.

It is an amenable number.

212222112002121 is a deficient number, since it is larger than the sum of its proper divisors (92647994811319).

212222112002121 is a wasteful number, since it uses less digits than its factorization.

212222112002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295105.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212222112002121 its reverse (121200211222212), we get a palindrome (333422323224333).

The spelling of 212222112002121 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred twelve million, two thousand, one hundred twenty-one".