212213120200121 has 4 divisors (see below), whose sum is σ = 212215566068352. Its totient is φ = 212210674331892.

The previous prime is 212213120200099. The next prime is 212213120200163. The reversal of 212213120200121 is 121002021312212.

212213120200121 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 a de Polignac number, because none of the positive numbers 2^k-212213120200121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212213120200093 and 212213120200102.

It is not an unprimeable number, because it can be changed into a prime (212213120200181) 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, 1222803965 + ... + 1222977498.

It is an arithmetic number, because the mean of its divisors is an integer number (53053891517088).

Almost surely, 2^{212213120200121} is an apocalyptic number.

It is an amenable number.

212213120200121 is a deficient number, since it is larger than the sum of its proper divisors (2445868231).

212213120200121 is an equidigital number, since it uses as much as digits as its factorization.

212213120200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445868230.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 212213120200121 its reverse (121002021312212), we get a palindrome (333215141512333).

The spelling of 212213120200121 in words is "two hundred twelve trillion, two hundred thirteen billion, one hundred twenty million, two hundred thousand, one hundred twenty-one".