200212212121 has 8 divisors (see below), whose sum is σ = 203149658880. Its totient is φ = 197284843392.

The previous prime is 200212212119. The next prime is 200212212127. The reversal of 200212212121 is 121212212002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200212212121 - 2¹ = 200212212119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200212212095 and 200212212104.

It is not an unprimeable number, because it can be changed into a prime (200212212127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2479480 + ... + 2558953.

It is an arithmetic number, because the mean of its divisors is an integer number (25393707360).

Almost surely, 2^200212212121 is an apocalyptic number.

It is an amenable number.

200212212121 is a deficient number, since it is larger than the sum of its proper divisors (2937446759).

200212212121 is an equidigital number, since it uses as much as digits as its factorization.

200212212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039015.

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

Adding to 200212212121 its reverse (121212212002), we get a palindrome (321424424123).

The spelling of 200212212121 in words is "two hundred billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-one".