221330432113240 has 64 divisors (see below), whose sum is σ = 499783522788000. Its totient is φ = 88214479675392.

The previous prime is 221330432113229. The next prime is 221330432113327. The reversal of 221330432113240 is 42311234033122.

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, 4758459 + ... + 21570901.

Almost surely, 2^{221330432113240} is an apocalyptic number.

221330432113240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221330432113240 is an abundant number, since it is smaller than the sum of its proper divisors (278453090674760).

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

221330432113240 is a wasteful number, since it uses less digits than its factorization.

221330432113240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813636 (or 16813632 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 221330432113240 its reverse (42311234033122), we get a palindrome (263641666146362).

The spelling of 221330432113240 in words is "two hundred twenty-one trillion, three hundred thirty billion, four hundred thirty-two million, one hundred thirteen thousand, two hundred forty".