221441110420 has 24 divisors (see below), whose sum is σ = 468105982848. Its totient is φ = 87989844000.

The previous prime is 221441110337. The next prime is 221441110421. The reversal of 221441110420 is 24011144122.

It is a junction number, because it is equal to n+sod(n) for n = 221441110391 and 221441110400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221441110421) 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, 36659416 + ... + 36665455.

It is an arithmetic number, because the mean of its divisors is an integer number (19504415952).

Almost surely, 2^221441110420 is an apocalyptic number.

221441110420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221441110420 is an abundant number, since it is smaller than the sum of its proper divisors (246664872428).

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

221441110420 is a wasteful number, since it uses less digits than its factorization.

221441110420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73325031 (or 73325029 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221441110420 its reverse (24011144122), we get a palindrome (245452254542).

The spelling of 221441110420 in words is "two hundred twenty-one billion, four hundred forty-one million, one hundred ten thousand, four hundred twenty".