212012020200121 has 4 divisors (see below), whose sum is σ = 214998104991744. Its totient is φ = 209025935408500.

The previous prime is 212012020200109. The next prime is 212012020200131. The reversal of 212012020200121 is 121002020210212.

It is a happy number.

212012020200121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212012020200121 - 2¹⁷ = 212012020069049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212012020200095 and 212012020200104.

It is not an unprimeable number, because it can be changed into a prime (212012020200131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493042395705 + ... + 1493042395846.

It is an arithmetic number, because the mean of its divisors is an integer number (53749526247936).

Almost surely, 2^{212012020200121} is an apocalyptic number.

It is an amenable number.

212012020200121 is a deficient number, since it is larger than the sum of its proper divisors (2986084791623).

212012020200121 is an equidigital number, since it uses as much as digits as its factorization.

212012020200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986084791622.

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

Adding to 212012020200121 its reverse (121002020210212), we get a palindrome (333014040410333).

The spelling of 212012020200121 in words is "two hundred twelve trillion, twelve billion, twenty million, two hundred thousand, one hundred twenty-one".