561222201 has 8 divisors (see below), whose sum is σ = 748570144. Its totient is φ = 374011200.

The previous prime is 561222199. The next prime is 561222251. The reversal of 561222201 is 102222165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561222201 - 2¹ = 561222199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561222251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24256 + ... + 41361.

It is an arithmetic number, because the mean of its divisors is an integer number (93571268).

Almost surely, 2^561222201 is an apocalyptic number.

It is an amenable number.

561222201 is a deficient number, since it is larger than the sum of its proper divisors (187347943).

561222201 is a wasteful number, since it uses less digits than its factorization.

561222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68471.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 561222201 is about 23690.1287670625. The cubic root of 561222201 is about 824.8562717477.

Adding to 561222201 its reverse (102222165), we get a palindrome (663444366).

The spelling of 561222201 in words is "five hundred sixty-one million, two hundred twenty-two thousand, two hundred one".