200212220101997 has 4 divisors (see below), whose sum is σ = 200215819737276. Its totient is φ = 200208620466720.

The previous prime is 200212220101921. The next prime is 200212220102021. The reversal of 200212220101997 is 799101022212002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107719780046596 + 92492440055401 = 10378814^2 + 9617299^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212220101997 - 2²⁰ = 200212219053421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200212220101997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200212220301997) 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, 1799734208 + ... + 1799845449.

It is an arithmetic number, because the mean of its divisors is an integer number (50053954934319).

Almost surely, 2^{200212220101997} is an apocalyptic number.

It is an amenable number.

200212220101997 is a deficient number, since it is larger than the sum of its proper divisors (3599635279).

200212220101997 is an equidigital number, since it uses as much as digits as its factorization.

200212220101997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599635278.

The product of its (nonzero) digits is 18144, while the sum is 38.

Adding to 200212220101997 its reverse (799101022212002), we get a palindrome (999313242313999).

The spelling of 200212220101997 in words is "two hundred trillion, two hundred twelve billion, two hundred twenty million, one hundred one thousand, nine hundred ninety-seven".