221225364052 has 36 divisors (see below), whose sum is σ = 491292696384. Its totient is φ = 86191699440.

The previous prime is 221225364049. The next prime is 221225364083. The reversal of 221225364052 is 250463522122.

221225364052 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221225363999 and 221225364017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51302428 + ... + 51306739.

It is an arithmetic number, because the mean of its divisors is an integer number (13647019344).

Almost surely, 2^221225364052 is an apocalyptic number.

221225364052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221225364052 is an abundant number, since it is smaller than the sum of its proper divisors (270067332332).

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

221225364052 is a wasteful number, since it uses less digits than its factorization.

221225364052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102609196 (or 102609187 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 221225364052 its reverse (250463522122), we get a palindrome (471688886174).

The spelling of 221225364052 in words is "two hundred twenty-one billion, two hundred twenty-five million, three hundred sixty-four thousand, fifty-two".