212001210000121 has 8 divisors (see below), whose sum is σ = 223159302115200. Its totient is φ = 200843131254480.

The previous prime is 212001210000071. The next prime is 212001210000157. The reversal of 212001210000121 is 121000012100212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212001210000121 - 2¹¹ = 212001209998073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212001210000221) 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 7 ways as a sum of consecutive naturals, for example, 59580816 + ... + 63038686.

It is an arithmetic number, because the mean of its divisors is an integer number (27894912764400).

Almost surely, 2^{212001210000121} is an apocalyptic number.

It is an amenable number.

212001210000121 is a deficient number, since it is larger than the sum of its proper divisors (11158092115079).

212001210000121 is a wasteful number, since it uses less digits than its factorization.

212001210000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6684719.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212001210000121 its reverse (121000012100212), we get a palindrome (333001222100333).

The spelling of 212001210000121 in words is "two hundred twelve trillion, one billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.