221345322 has 32 divisors (see below), whose sum is σ = 495993024. Its totient is φ = 65260800.

The previous prime is 221345317. The next prime is 221345323. The reversal of 221345322 is 223543122.

221345322 is digitally balanced in base 2, 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 = 221345292 and 221345301.

It is not an unprimeable number, because it can be changed into a prime (221345323) 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, 42879 + ... + 47762.

It is an arithmetic number, because the mean of its divisors is an integer number (15499782).

Almost surely, 2^221345322 is an apocalyptic number.

221345322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221345322 is an abundant number, since it is smaller than the sum of its proper divisors (274647702).

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

221345322 is a wasteful number, since it uses less digits than its factorization.

221345322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90694.

The product of its digits is 2880, while the sum is 24.

The square root of 221345322 is about 14877.6786495743. The cubic root of 221345322 is about 604.9090972865.

Adding to 221345322 its reverse (223543122), we get a palindrome (444888444).

It can be divided in two parts, 221 and 345322, that added together give a palindrome (345543).

The spelling of 221345322 in words is "two hundred twenty-one million, three hundred forty-five thousand, three hundred twenty-two".