221313104440 has 64 divisors (see below), whose sum is σ = 518885740800. Its totient is φ = 84848698368.

The previous prime is 221313104417. The next prime is 221313104461. The reversal of 221313104440 is 44401313122.

221313104440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 537384 + ... + 855223.

It is an arithmetic number, because the mean of its divisors is an integer number (8107589700).

Almost surely, 2^221313104440 is an apocalyptic number.

221313104440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221313104440 is an abundant number, since it is smaller than the sum of its proper divisors (297572636360).

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

221313104440 is a wasteful number, since it uses less digits than its factorization.

221313104440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392784 (or 1392780 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221313104440 its reverse (44401313122), we get a palindrome (265714417562).

The spelling of 221313104440 in words is "two hundred twenty-one billion, three hundred thirteen million, one hundred four thousand, four hundred forty".