212000120122121 has 16 divisors (see below), whose sum is σ = 223520882931840. Its totient is φ = 200515669724160.

The previous prime is 212000120122079. The next prime is 212000120122123. The reversal of 212000120122121 is 121221021000212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212000120122121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212000120122121.

It is not an unprimeable number, because it can be changed into a prime (212000120122123) 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, 301207811 + ... + 301910823.

It is an arithmetic number, because the mean of its divisors is an integer number (13970055183240).

Almost surely, 2^{212000120122121} is an apocalyptic number.

It is an amenable number.

212000120122121 is a deficient number, since it is larger than the sum of its proper divisors (11520762809719).

212000120122121 is a wasteful number, since it uses less digits than its factorization.

212000120122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728816.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212000120122121 its reverse (121221021000212), we get a palindrome (333221141122333).

The spelling of 212000120122121 in words is "two hundred twelve trillion, one hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".