21241030 has 16 divisors (see below), whose sum is σ = 38288880. Its totient is φ = 8484192.

The previous prime is 21241013. The next prime is 21241037. The reversal of 21241030 is 3014212.

It is a self number, because there is not a number n which added to its sum of digits gives 21241030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241037) 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, 9697 + ... + 11683.

It is an arithmetic number, because the mean of its divisors is an integer number (2393055).

Almost surely, 2^21241030 is an apocalyptic number.

21241030 is a deficient number, since it is larger than the sum of its proper divisors (17047850).

21241030 is a wasteful number, since it uses less digits than its factorization.

21241030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21241030 is about 4608.7991928484. The cubic root of 21241030 is about 276.9439342275.

Adding to 21241030 its reverse (3014212), we get a palindrome (24255242).

The spelling of 21241030 in words is "twenty-one million, two hundred forty-one thousand, thirty".