223221639253660 has 96 divisors (see below), whose sum is σ = 522510340343040. Its totient is φ = 79606205457408.

The previous prime is 223221639253607. The next prime is 223221639253687. The reversal of 223221639253660 is 66352936122322.

It is a happy number.

It is a super-3 number, since 3×223221639253660³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 223221639253598 and 223221639253607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70037287 + ... + 73155073.

It is an arithmetic number, because the mean of its divisors is an integer number (5442816045240).

Almost surely, 2^{223221639253660} is an apocalyptic number.

223221639253660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223221639253660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261255170171520).

223221639253660 is an abundant number, since it is smaller than the sum of its proper divisors (299288701089380).

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

223221639253660 is a wasteful number, since it uses less digits than its factorization.

223221639253660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128915 (or 3128913 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 52.

The spelling of 223221639253660 in words is "two hundred twenty-three trillion, two hundred twenty-one billion, six hundred thirty-nine million, two hundred fifty-three thousand, six hundred sixty".