1100221012105 has 8 divisors (see below), whose sum is σ = 1397927874312. Its totient is φ = 828401703168.

The previous prime is 1100221012087. The next prime is 1100221012109. The reversal of 1100221012105 is 5012101220011.

It can be written as a sum of positive squares in 4 ways, for example, as 390401282041 + 709819730064 = 624821^2 + 842508^2 .

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 1100221012105 - 2²¹ = 1100218914953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100221012109) 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, 6471888222 + ... + 6471888391.

It is an arithmetic number, because the mean of its divisors is an integer number (174740984289).

Almost surely, 2^{1100221012105} is an apocalyptic number.

It is an amenable number.

1100221012105 is a deficient number, since it is larger than the sum of its proper divisors (297706862207).

1100221012105 is a wasteful number, since it uses less digits than its factorization.

1100221012105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943776635.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1100221012105 its reverse (5012101220011), we get a palindrome (6112322232116).

The spelling of 1100221012105 in words is "one trillion, one hundred billion, two hundred twenty-one million, twelve thousand, one hundred five".