221440241022 has 128 divisors (see below), whose sum is σ = 594836766720. Its totient is φ = 53074707840.

The previous prime is 221440240961. The next prime is 221440241039. The reversal of 221440241022 is 220142044122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221440240983 and 221440241001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29683929 + ... + 29691387.

It is an arithmetic number, because the mean of its divisors is an integer number (4647162240).

Almost surely, 2^221440241022 is an apocalyptic number.

221440241022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 221440241022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297418383360).

221440241022 is an abundant number, since it is smaller than the sum of its proper divisors (373396525698).

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

221440241022 is a wasteful number, since it uses less digits than its factorization.

221440241022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12438.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221440241022 its reverse (220142044122), we get a palindrome (441582285144).

The spelling of 221440241022 in words is "two hundred twenty-one billion, four hundred forty million, two hundred forty-one thousand, twenty-two".