221214422240 has 96 divisors (see below), whose sum is σ = 604839674880. Its totient is φ = 74884852224.

The previous prime is 221214422239. The next prime is 221214422267. The reversal of 221214422240 is 42224412122.

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, 1161602 + ... + 1338561.

It is an arithmetic number, because the mean of its divisors is an integer number (6300413280).

Almost surely, 2^221214422240 is an apocalyptic number.

221214422240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221214422240 is an abundant number, since it is smaller than the sum of its proper divisors (383625252640).

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

221214422240 is a wasteful number, since it uses less digits than its factorization.

221214422240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500264 (or 2500256 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 221214422240 its reverse (42224412122), we get a palindrome (263438834362).

The spelling of 221214422240 in words is "two hundred twenty-one billion, two hundred fourteen million, four hundred twenty-two thousand, two hundred forty".