221101211221109 has 8 divisors (see below), whose sum is σ = 224448641670240. Its totient is φ = 217755175253616.

The previous prime is 221101211221031. The next prime is 221101211221133. The reversal of 221101211221109 is 901122112101122.

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 221101211221109 - 2⁸ = 221101211220853 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 (221101211221139) 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, 348300899 + ... + 348935120.

It is an arithmetic number, because the mean of its divisors is an integer number (28056080208780).

Almost surely, 2^{221101211221109} is an apocalyptic number.

It is an amenable number.

221101211221109 is a deficient number, since it is larger than the sum of its proper divisors (3347430449131).

221101211221109 is an equidigital number, since it uses as much as digits as its factorization.

221101211221109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697240819.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 221101211221109 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred eleven million, two hundred twenty-one thousand, one hundred nine".