221100021010109 has 12 divisors (see below), whose sum is σ = 228990390876000. Its totient is φ = 213472778038800.

The previous prime is 221100021010097. The next prime is 221100021010133. The reversal of 221100021010109 is 901010120001122.

It is not a de Polignac number, because 221100021010109 - 2⁸ = 221100021009853 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 (221100021010709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57036392 + ... + 60789390.

It is an arithmetic number, because the mean of its divisors is an integer number (19082532573000).

Almost surely, 2^{221100021010109} is an apocalyptic number.

221100021010109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

221100021010109 is a deficient number, since it is larger than the sum of its proper divisors (7890369865891).

221100021010109 is an equidigital number, since it uses as much as digits as its factorization.

221100021010109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823108 (or 3823079 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 221100021010109 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, ten thousand, one hundred nine".