212021012000121 has 16 divisors (see below), whose sum is σ = 283960498708224. Its totient is φ = 140714523072464.

The previous prime is 212021012000113. The next prime is 212021012000123. The reversal of 212021012000121 is 121000210120212.

It is a cyclic number.

It is not a de Polignac number, because 212021012000121 - 2³ = 212021012000113 is a prime.

It is a super-3 number, since 3×212021012000121³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212021012000121.

It is not an unprimeable number, because it can be changed into a prime (212021012000123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1758591 + ... + 20667236.

It is an arithmetic number, because the mean of its divisors is an integer number (17747531169264).

Almost surely, 2^{212021012000121} is an apocalyptic number.

It is an amenable number.

212021012000121 is a deficient number, since it is larger than the sum of its proper divisors (71939486708103).

212021012000121 is a wasteful number, since it uses less digits than its factorization.

212021012000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22439940.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212021012000121 its reverse (121000210120212), we get a palindrome (333021222120333).

The spelling of 212021012000121 in words is "two hundred twelve trillion, twenty-one billion, twelve million, one hundred twenty-one", and thus it is an aban number.