221411224144220 has 48 divisors (see below), whose sum is σ = 533929459190400. Its totient is φ = 76275637024320.

The previous prime is 221411224144213. The next prime is 221411224144301. The reversal of 221411224144220 is 22441422114122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26484592010 + ... + 26484600369.

It is an arithmetic number, because the mean of its divisors is an integer number (11123530399800).

Almost surely, 2^{221411224144220} is an apocalyptic number.

221411224144220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221411224144220 is an abundant number, since it is smaller than the sum of its proper divisors (312518235046180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221411224144220 is a wasteful number, since it uses less digits than its factorization.

221411224144220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52969192418 (or 52969192416 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 221411224144220 its reverse (22441422114122), we get a palindrome (243852646258342).

The spelling of 221411224144220 in words is "two hundred twenty-one trillion, four hundred eleven billion, two hundred twenty-four million, one hundred forty-four thousand, two hundred twenty".