212310033121 has 4 divisors (see below), whose sum is σ = 214257831700. Its totient is φ = 210362234544.

The previous prime is 212310033107. The next prime is 212310033139. The reversal of 212310033121 is 121330013212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49042317025 + 163267716096 = 221455^2 + 404064^2 .

It is a cyclic number.

It is not a de Polignac number, because 212310033121 - 2³³ = 203720098529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212310033191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973899126 + ... + 973899343.

It is an arithmetic number, because the mean of its divisors is an integer number (53564457925).

Almost surely, 2^212310033121 is an apocalyptic number.

It is an amenable number.

212310033121 is a deficient number, since it is larger than the sum of its proper divisors (1947798579).

212310033121 is a wasteful number, since it uses less digits than its factorization.

212310033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947798578.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212310033121 its reverse (121330013212), we get a palindrome (333640046333).

The spelling of 212310033121 in words is "two hundred twelve billion, three hundred ten million, thirty-three thousand, one hundred twenty-one".