200212021993 has 2 divisors, whose sum is σ = 200212021994. Its totient is φ = 200212021992.

The previous prime is 200212021981. The next prime is 200212022027. The reversal of 200212021993 is 399120212002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100954259289 + 99257762704 = 317733^2 + 315052^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212021993 - 2⁹ = 200212021481 is a prime.

It is not a weakly prime, because it can be changed into another prime (200212021913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100106010996 + 100106010997.

It is an arithmetic number, because the mean of its divisors is an integer number (100106010997).

Almost surely, 2^200212021993 is an apocalyptic number.

It is an amenable number.

200212021993 is a deficient number, since it is larger than the sum of its proper divisors (1).

200212021993 is an equidigital number, since it uses as much as digits as its factorization.

200212021993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

Adding to 200212021993 its reverse (399120212002), we get a palindrome (599332233995).

The spelling of 200212021993 in words is "two hundred billion, two hundred twelve million, twenty-one thousand, nine hundred ninety-three".