221220200105 has 8 divisors (see below), whose sum is σ = 265497425664. Its totient is φ = 176954036400.

The previous prime is 221220200093. The next prime is 221220200107. The reversal of 221220200105 is 501002022122.

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

It is not a de Polignac number, because 221220200105 - 2²⁴ = 221203422889 is a prime.

It is a super-2 number, since 2×221220200105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221220200107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2721401 + ... + 2801510.

It is an arithmetic number, because the mean of its divisors is an integer number (33187178208).

Almost surely, 2^221220200105 is an apocalyptic number.

It is an amenable number.

221220200105 is a deficient number, since it is larger than the sum of its proper divisors (44277225559).

221220200105 is an equidigital number, since it uses as much as digits as its factorization.

221220200105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530927.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 221220200105 its reverse (501002022122), we get a palindrome (722222222227).

The spelling of 221220200105 in words is "two hundred twenty-one billion, two hundred twenty million, two hundred thousand, one hundred five".