16121200 has 60 divisors (see below), whose sum is σ = 39716208. Its totient is φ = 6284800.

The previous prime is 16121191. The next prime is 16121207. The reversal of 16121200 is 212161.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15909 + ... + 16891.

Almost surely, 2^16121200 is an apocalyptic number.

16121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16121200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19858104).

16121200 is an abundant number, since it is smaller than the sum of its proper divisors (23595008).

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

16121200 is a wasteful number, since it uses less digits than its factorization.

16121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1031 counting only the distinct ones).

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

The square root of 16121200 is about 4015.1214178403. The cubic root of 16121200 is about 252.6188702793.

Adding to 16121200 its reverse (212161), we get a palindrome (16333361).

The spelling of 16121200 in words is "sixteen million, one hundred twenty-one thousand, two hundred".