16121204 has 24 divisors (see below), whose sum is σ = 30996000. Its totient is φ = 7275680.

The previous prime is 16121191. The next prime is 16121207. The reversal of 16121204 is 40212161.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5327 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (1291500).

Almost surely, 2^16121204 is an apocalyptic number.

It is an amenable number.

16121204 is a deficient number, since it is larger than the sum of its proper divisors (14874796).

16121204 is a wasteful number, since it uses less digits than its factorization.

16121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 16121204 is about 4015.1219159572. The cubic root of 16121204 is about 252.6188911726.

Adding to 16121204 its reverse (40212161), we get a palindrome (56333365).

The spelling of 16121204 in words is "sixteen million, one hundred twenty-one thousand, two hundred four".