221303041240 has 64 divisors (see below), whose sum is σ = 507428906400. Its totient is φ = 86833523712.

The previous prime is 221303041217. The next prime is 221303041243. The reversal of 221303041240 is 42140303122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221303041243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17078604 + ... + 17091556.

Almost surely, 2^221303041240 is an apocalyptic number.

221303041240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221303041240 is an abundant number, since it is smaller than the sum of its proper divisors (286125865160).

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

221303041240 is a wasteful number, since it uses less digits than its factorization.

221303041240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21076 (or 21072 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221303041240 its reverse (42140303122), we get a palindrome (263443344362).

The spelling of 221303041240 in words is "two hundred twenty-one billion, three hundred three million, forty-one thousand, two hundred forty".