1101001200221 has 8 divisors (see below), whose sum is σ = 1185737904120. Its totient is φ = 1016270825472.

The previous prime is 1101001200217. The next prime is 1101001200253. The reversal of 1101001200221 is 1220021001011.

It can be written as a sum of positive squares in 4 ways, for example, as 23174596 + 1100978025625 = 4814^2 + 1049275^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1101001200221 - 2² = 1101001200217 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 (1101001205221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217876 + ... + 1919693.

It is an arithmetic number, because the mean of its divisors is an integer number (148217238015).

Almost surely, 2^{1101001200221} is an apocalyptic number.

It is an amenable number.

1101001200221 is a deficient number, since it is larger than the sum of its proper divisors (84736703899).

1101001200221 is a wasteful number, since it uses less digits than its factorization.

1101001200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164575.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1101001200221 its reverse (1220021001011), we get a palindrome (2321022201232).

The spelling of 1101001200221 in words is "one trillion, one hundred one billion, one million, two hundred thousand, two hundred twenty-one".