221030023324240 has 80 divisors (see below), whose sum is σ = 566923348864656. Its totient is φ = 79620571238400.

The previous prime is 221030023324153. The next prime is 221030023324273. The reversal of 221030023324240 is 42423320030122.

It can be written as a sum of positive squares in 8 ways, for example, as 91228936315456 + 129801087008784 = 9551384^2 + 11393028^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 221030023324199 and 221030023324208.

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, 2591772831 + ... + 2591858110.

Almost surely, 2^{221030023324240} is an apocalyptic number.

221030023324240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221030023324240 is an abundant number, since it is smaller than the sum of its proper divisors (345893325540416).

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

221030023324240 is a wasteful number, since it uses less digits than its factorization.

221030023324240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183631008 (or 5183631002 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 221030023324240 its reverse (42423320030122), we get a palindrome (263453343354362).

The spelling of 221030023324240 in words is "two hundred twenty-one trillion, thirty billion, twenty-three million, three hundred twenty-four thousand, two hundred forty".