20000201212221 has 8 divisors (see below), whose sum is σ = 26667664517760. Its totient is φ = 13333102690752.

The previous prime is 20000201212217. The next prime is 20000201212223. The reversal of 20000201212221 is 12221210200002.

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

It is not a de Polignac number, because 20000201212221 - 2² = 20000201212217 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20000201212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000201212223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91068060 + ... + 91287413.

It is an arithmetic number, because the mean of its divisors is an integer number (3333458064720).

Almost surely, 2^{20000201212221} is an apocalyptic number.

It is an amenable number.

20000201212221 is a deficient number, since it is larger than the sum of its proper divisors (6667463305539).

20000201212221 is a wasteful number, since it uses less digits than its factorization.

20000201212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182392035.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20000201212221 its reverse (12221210200002), we get a palindrome (32221411412223).

The spelling of 20000201212221 in words is "twenty trillion, two hundred one million, two hundred twelve thousand, two hundred twenty-one".