200212121 has 8 divisors (see below), whose sum is σ = 203234304. Its totient is φ = 197210880.

The previous prime is 200212099. The next prime is 200212123. The reversal of 200212121 is 121212002.

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 a de Polignac number, because none of the positive numbers 2^k-200212121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200212123) 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, 14585 + ... + 24761.

It is an arithmetic number, because the mean of its divisors is an integer number (25404288).

Almost surely, 2^200212121 is an apocalyptic number.

It is an amenable number.

200212121 is a deficient number, since it is larger than the sum of its proper divisors (3022183).

200212121 is a wasteful number, since it uses less digits than its factorization.

200212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 200212121 is about 14149.6332461304. The cubic root of 200212121 is about 585.0102231150.

Adding to 200212121 its reverse (121212002), we get a palindrome (321424123).

It can be divided in two parts, 2002 and 12121, that multiplied together give a palindrome (24266242).

The spelling of 200212121 in words is "two hundred million, two hundred twelve thousand, one hundred twenty-one".