21141316 has 24 divisors (see below), whose sum is σ = 42448896. Its totient is φ = 9024960.

The previous prime is 21141299. The next prime is 21141317. The reversal of 21141316 is 61314112.

It is a junction number, because it is equal to n+sod(n) for n = 21141293 and 21141302.

It is not an unprimeable number, because it can be changed into a prime (21141317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6525 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (1768704).

Almost surely, 2^21141316 is an apocalyptic number.

It is an amenable number.

21141316 is an abundant number, since it is smaller than the sum of its proper divisors (21307580).

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

21141316 is a wasteful number, since it uses less digits than its factorization.

21141316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979 (or 2977 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 21141316 is about 4597.9686819290. The cubic root of 21141316 is about 276.5098919863.

Adding to 21141316 its reverse (61314112), we get a palindrome (82455428).

The spelling of 21141316 in words is "twenty-one million, one hundred forty-one thousand, three hundred sixteen".