221240240360 has 32 divisors (see below), whose sum is σ = 500667958440. Its totient is φ = 87984555264.

The previous prime is 221240240359. The next prime is 221240240369. The reversal of 221240240360 is 63042042122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 219419170084 + 1821070276 = 468422^2 + 42674^2 .

It is not an unprimeable number, because it can be changed into a prime (221240240369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15978647 + ... + 15992486.

Almost surely, 2^221240240360 is an apocalyptic number.

221240240360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221240240360 is an abundant number, since it is smaller than the sum of its proper divisors (279427718080).

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

221240240360 is a wasteful number, since it uses less digits than its factorization.

221240240360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31971317 (or 31971313 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 221240240360 its reverse (63042042122), we get a palindrome (284282282482).

The spelling of 221240240360 in words is "two hundred twenty-one billion, two hundred forty million, two hundred forty thousand, three hundred sixty".