221441412220 has 24 divisors (see below), whose sum is σ = 531459389664. Its totient is φ = 75922769856.

The previous prime is 221441412217. The next prime is 221441412251. The reversal of 221441412220 is 22214144122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790862047 + ... + 790862326.

It is an arithmetic number, because the mean of its divisors is an integer number (22144141236).

Almost surely, 2^221441412220 is an apocalyptic number.

221441412220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221441412220 is an abundant number, since it is smaller than the sum of its proper divisors (310017977444).

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

221441412220 is a wasteful number, since it uses less digits than its factorization.

221441412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581724389 (or 1581724387 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 221441412220 its reverse (22214144122), we get a palindrome (243655556342).

The spelling of 221441412220 in words is "two hundred twenty-one billion, four hundred forty-one million, four hundred twelve thousand, two hundred twenty".