1601222216 has 32 divisors (see below), whose sum is σ = 3279355200. Its totient is φ = 726911040.

The previous prime is 1601222201. The next prime is 1601222221. The reversal of 1601222216 is 6122221061.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1601222191 and 1601222200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61370 + ... + 83478.

It is an arithmetic number, because the mean of its divisors is an integer number (102479850).

Almost surely, 2^1601222216 is an apocalyptic number.

It is an amenable number.

1601222216 is an abundant number, since it is smaller than the sum of its proper divisors (1678132984).

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

1601222216 is a wasteful number, since it uses less digits than its factorization.

1601222216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22949 (or 22945 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1601222216 is about 40015.2747835124. The cubic root of 1601222216 is about 1169.9048345905.

Adding to 1601222216 its reverse (6122221061), we get a palindrome (7723443277).

The spelling of 1601222216 in words is "one billion, six hundred one million, two hundred twenty-two thousand, two hundred sixteen".