221885106835 has 8 divisors (see below), whose sum is σ = 304299575136. Its totient is φ = 152149787520.

The previous prime is 221885106769. The next prime is 221885106841. The reversal of 221885106835 is 538601588122.

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

It is not a de Polignac number, because 221885106835 - 2¹⁹ = 221884582547 is a prime.

It is a super-3 number, since 3×221885106835³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 3169787206 + ... + 3169787275.

It is an arithmetic number, because the mean of its divisors is an integer number (38037446892).

Almost surely, 2^221885106835 is an apocalyptic number.

221885106835 is a deficient number, since it is larger than the sum of its proper divisors (82414468301).

221885106835 is an equidigital number, since it uses as much as digits as its factorization.

221885106835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6339574493.

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 221885106835 in words is "two hundred twenty-one billion, eight hundred eighty-five million, one hundred six thousand, eight hundred thirty-five".