21016150 has 12 divisors (see below), whose sum is σ = 39090132. Its totient is φ = 8406440.

The previous prime is 21016139. The next prime is 21016153. The reversal of 21016150 is 5161012.

It is a happy number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21016153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210112 + ... + 210211.

It is an arithmetic number, because the mean of its divisors is an integer number (3257511).

Almost surely, 2^21016150 is an apocalyptic number.

21016150 is a deficient number, since it is larger than the sum of its proper divisors (18073982).

21016150 is a wasteful number, since it uses less digits than its factorization.

21016150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420335 (or 420330 counting only the distinct ones).

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

The square root of 21016150 is about 4584.3374657632. The cubic root of 21016150 is about 275.9631243179.

Adding to 21016150 its reverse (5161012), we get a palindrome (26177162).

The spelling of 21016150 in words is "twenty-one million, sixteen thousand, one hundred fifty".