21010414 has 4 divisors (see below), whose sum is σ = 31515624. Its totient is φ = 10505206.

The previous prime is 21010411. The next prime is 21010427. The reversal of 21010414 is 41401012.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21010394 and 21010403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252602 + ... + 5252605.

It is an arithmetic number, because the mean of its divisors is an integer number (7878906).

Almost surely, 2^21010414 is an apocalyptic number.

21010414 is a deficient number, since it is larger than the sum of its proper divisors (10505210).

21010414 is a wasteful number, since it uses less digits than its factorization.

21010414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505209.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 21010414 is about 4583.7118146760. The cubic root of 21010414 is about 275.9380155561.

Adding to 21010414 its reverse (41401012), we get a palindrome (62411426).

The spelling of 21010414 in words is "twenty-one million, ten thousand, four hundred fourteen".