16812201 has 16 divisors (see below), whose sum is σ = 27126144. Its totient is φ = 9041664.

The previous prime is 16812151. The next prime is 16812203. The reversal of 16812201 is 10221861.

It is not a de Polignac number, because 16812201 - 2⁷ = 16812073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (16812203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23190 + ... + 23903.

It is an arithmetic number, because the mean of its divisors is an integer number (1695384).

Almost surely, 2^16812201 is an apocalyptic number.

It is an amenable number.

16812201 is a deficient number, since it is larger than the sum of its proper divisors (10313943).

16812201 is a wasteful number, since it uses less digits than its factorization.

16812201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47120.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 16812201 is about 4100.2684058486. The cubic root of 16812201 is about 256.1778193686.

The spelling of 16812201 in words is "sixteen million, eight hundred twelve thousand, two hundred one".