16211005 has 16 divisors (see below), whose sum is σ = 20093184. Its totient is φ = 12548800.

The previous prime is 16211003. The next prime is 16211023. The reversal of 16211005 is 50011261.

It is a happy number.

It is not a de Polignac number, because 16211005 - 2¹ = 16211003 is a prime.

It is a super-2 number, since 2×16211005² = 525593366220050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16211003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23394 + ... + 24076.

It is an arithmetic number, because the mean of its divisors is an integer number (1255824).

Almost surely, 2^16211005 is an apocalyptic number.

It is an amenable number.

16211005 is a deficient number, since it is larger than the sum of its proper divisors (3882179).

16211005 is a wasteful number, since it uses less digits than its factorization.

16211005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 16211005 is about 4026.2892345186. The cubic root of 16211005 is about 253.0870827724.

Adding to 16211005 its reverse (50011261), we get a palindrome (66222266).

The spelling of 16211005 in words is "sixteen million, two hundred eleven thousand, five".