16222601 has 4 divisors (see below), whose sum is σ = 16238100. Its totient is φ = 16207104.

The previous prime is 16222553. The next prime is 16222631. The reversal of 16222601 is 10622261.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5067001 + 11155600 = 2251^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 16222601 - 2¹⁴ = 16206217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16222631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6056 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (4059525).

Almost surely, 2^16222601 is an apocalyptic number.

It is an amenable number.

16222601 is a deficient number, since it is larger than the sum of its proper divisors (15499).

16222601 is a wasteful number, since it uses less digits than its factorization.

16222601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15498.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 16222601 is about 4027.7290127316. The cubic root of 16222601 is about 253.1474141814.

Adding to 16222601 its reverse (10622261), we get a palindrome (26844862).

It can be divided in two parts, 1622260 and 1, that added together give a palindrome (1622261).

The spelling of 16222601 in words is "sixteen million, two hundred twenty-two thousand, six hundred one".