200011021111001 has 4 divisors (see below), whose sum is σ = 203289890309604. Its totient is φ = 196732151912400.

The previous prime is 200011021110997. The next prime is 200011021111007. The reversal of 200011021111001 is 100111120110002.

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 99914998071001 + 100096023040000 = 9995749^2 + 10004800^2 .

It is a cyclic number.

It is not a de Polignac number, because 200011021111001 - 2² = 200011021110997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200011021111007) 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, 1639434599210 + ... + 1639434599331.

It is an arithmetic number, because the mean of its divisors is an integer number (50822472577401).

Almost surely, 2^{200011021111001} is an apocalyptic number.

It is an amenable number.

200011021111001 is a deficient number, since it is larger than the sum of its proper divisors (3278869198603).

200011021111001 is an equidigital number, since it uses as much as digits as its factorization.

200011021111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278869198602.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 200011021111001 its reverse (100111120110002), we get a palindrome (300122141221003).

The spelling of 200011021111001 in words is "two hundred trillion, eleven billion, twenty-one million, one hundred eleven thousand, one".