16121214 has 32 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 5304312.

The previous prime is 16121207. The next prime is 16121221. The reversal of 16121214 is 41212161.

It is an interprime number because it is at equal distance from previous prime (16121207) and next prime (16121221).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2377 + ... + 6155.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^16121214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16121214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18144000).

16121214 is an abundant number, since it is smaller than the sum of its proper divisors (20166786).

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

16121214 is a wasteful number, since it uses less digits than its factorization.

16121214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869 (or 3863 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 16121214 is about 4015.1231612492. The cubic root of 16121214 is about 252.6189434059.

Adding to 16121214 its reverse (41212161), we get a palindrome (57333375).

The spelling of 16121214 in words is "sixteen million, one hundred twenty-one thousand, two hundred fourteen".