16122001 has 8 divisors (see below), whose sum is σ = 19509120. Its totient is φ = 13005888.

The previous prime is 16121971. The next prime is 16122037. The reversal of 16122001 is 10022161.

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

It is not a de Polignac number, because 16122001 - 2¹¹ = 16119953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16122091) 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, 67621 + ... + 67858.

It is an arithmetic number, because the mean of its divisors is an integer number (2438640).

Almost surely, 2^16122001 is an apocalyptic number.

It is an amenable number.

16122001 is a deficient number, since it is larger than the sum of its proper divisors (3387119).

16122001 is a wasteful number, since it uses less digits than its factorization.

16122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135503.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 16122001 is about 4015.2211645188. The cubic root of 16122001 is about 252.6230540945.

Adding to 16122001 its reverse (10022161), we get a palindrome (26144162).

The spelling of 16122001 in words is "sixteen million, one hundred twenty-two thousand, one".