212012200002121 has 16 divisors (see below), whose sum is σ = 214634036073600. Its totient is φ = 209401391564928.

The previous prime is 212012200002067. The next prime is 212012200002131. The reversal of 212012200002121 is 121200002210212.

It is a happy number.

212012200002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212012200002121 - 2¹⁷ = 212012199871049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212012200002095 and 212012200002104.

It is not an unprimeable number, because it can be changed into a prime (212012200002131) 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, 226471035 + ... + 227405263.

It is an arithmetic number, because the mean of its divisors is an integer number (13414627254600).

Almost surely, 2^{212012200002121} is an apocalyptic number.

It is an amenable number.

212012200002121 is a deficient number, since it is larger than the sum of its proper divisors (2621836071479).

212012200002121 is a wasteful number, since it uses less digits than its factorization.

212012200002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940128.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212012200002121 its reverse (121200002210212), we get a palindrome (333212202212333).

The spelling of 212012200002121 in words is "two hundred twelve trillion, twelve billion, two hundred million, two thousand, one hundred twenty-one".