200212030121 has 4 divisors (see below), whose sum is σ = 201049737600. Its totient is φ = 199374322644.

The previous prime is 200212030099. The next prime is 200212030147. The reversal of 200212030121 is 121030212002.

It is a happy number.

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-200212030121 is a prime.

It is a super-2 number, since 2×200212030121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200212030096 and 200212030105.

It is not an unprimeable number, because it can be changed into a prime (200212030181) 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, 418853381 + ... + 418853858.

It is an arithmetic number, because the mean of its divisors is an integer number (50262434400).

Almost surely, 2^200212030121 is an apocalyptic number.

It is an amenable number.

200212030121 is a deficient number, since it is larger than the sum of its proper divisors (837707479).

200212030121 is an equidigital number, since it uses as much as digits as its factorization.

200212030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837707478.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 200212030121 its reverse (121030212002), we get a palindrome (321242242123).

The spelling of 200212030121 in words is "two hundred billion, two hundred twelve million, thirty thousand, one hundred twenty-one".