2011000200221 has 4 divisors (see below), whose sum is σ = 2012259438012. Its totient is φ = 2009740962432.

The previous prime is 2011000200197. The next prime is 2011000200229. The reversal of 2011000200221 is 1220020001102.

It is a happy number.

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 297964231321 + 1713035968900 = 545861^2 + 1308830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011000200221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011000200229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629616500 + ... + 629619693.

It is an arithmetic number, because the mean of its divisors is an integer number (503064859503).

Almost surely, 2^{2011000200221} is an apocalyptic number.

It is an amenable number.

2011000200221 is a deficient number, since it is larger than the sum of its proper divisors (1259237791).

2011000200221 is a wasteful number, since it uses less digits than its factorization.

2011000200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259237790.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2011000200221 its reverse (1220020001102), we get a palindrome (3231020201323).

The spelling of 2011000200221 in words is "two trillion, eleven billion, two hundred thousand, two hundred twenty-one".