220001000100221 has 8 divisors (see below), whose sum is σ = 233213413803840. Its totient is φ = 206818717330368.

The previous prime is 220001000100181. The next prime is 220001000100227. The reversal of 220001000100221 is 122001000100022.

It is a happy number.

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 220001000100221 - 2⁴² = 215602953589117 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 (220001000100227) 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, 7532718401 + ... + 7532747606.

It is an arithmetic number, because the mean of its divisors is an integer number (29151676725480).

Almost surely, 2^{220001000100221} is an apocalyptic number.

It is an amenable number.

220001000100221 is a deficient number, since it is larger than the sum of its proper divisors (13212413703619).

220001000100221 is a wasteful number, since it uses less digits than its factorization.

220001000100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15065466883.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220001000100221 its reverse (122001000100022), we get a palindrome (342002000200243).

The spelling of 220001000100221 in words is "two hundred twenty trillion, one billion, one hundred thousand, two hundred twenty-one".