2101221221109 has 8 divisors (see below), whose sum is σ = 2802047789760. Its totient is φ = 1400604399936.

The previous prime is 2101221221107. The next prime is 2101221221129. The reversal of 2101221221109 is 9011221221012.

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

It is not a de Polignac number, because 2101221221109 - 2¹ = 2101221221107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101221221107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52413492 + ... + 52453565.

It is an arithmetic number, because the mean of its divisors is an integer number (350255973720).

Almost surely, 2^{2101221221109} is an apocalyptic number.

It is an amenable number.

2101221221109 is a deficient number, since it is larger than the sum of its proper divisors (700826568651).

2101221221109 is a wasteful number, since it uses less digits than its factorization.

2101221221109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104873739.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 2101221221109 in words is "two trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred nine".