200011211001001 has 4 divisors (see below), whose sum is σ = 202073182248532. Its totient is φ = 197949239753472.

The previous prime is 200011211000957. The next prime is 200011211001011. The reversal of 200011211001001 is 100100112110002.

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 117850564810000 + 82160646191001 = 10855900^2 + 9064251^2 .

It is a cyclic number.

It is not a de Polignac number, because 200011211001001 - 2²⁵ = 200011177446569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200011211001011) 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, 1030985623620 + ... + 1030985623813.

It is an arithmetic number, because the mean of its divisors is an integer number (50518295562133).

Almost surely, 2^{200011211001001} is an apocalyptic number.

It is an amenable number.

200011211001001 is a deficient number, since it is larger than the sum of its proper divisors (2061971247531).

200011211001001 is an equidigital number, since it uses as much as digits as its factorization.

200011211001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061971247530.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 200011211001001 its reverse (100100112110002), we get a palindrome (300111323111003).

The spelling of 200011211001001 in words is "two hundred trillion, eleven billion, two hundred eleven million, one thousand, one".