200012022001021 has 4 divisors (see below), whose sum is σ = 200012091957792. Its totient is φ = 200011952044252.

The previous prime is 200012022000991. The next prime is 200012022001063. The reversal of 200012022001021 is 120100220210002.

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 not a de Polignac number, because 200012022001021 - 2¹¹ = 200012021998973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200012022000992 and 200012022001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200012022001721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30498511 + ... + 36471676.

It is an arithmetic number, because the mean of its divisors is an integer number (50003022989448).

Almost surely, 2^{200012022001021} is an apocalyptic number.

It is an amenable number.

200012022001021 is a deficient number, since it is larger than the sum of its proper divisors (69956771).

200012022001021 is an equidigital number, since it uses as much as digits as its factorization.

200012022001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69956770.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200012022001021 its reverse (120100220210002), we get a palindrome (320112242211023).

The spelling of 200012022001021 in words is "two hundred trillion, twelve billion, twenty-two million, one thousand, twenty-one".