21241400010 has 16 divisors (see below), whose sum is σ = 50979360096. Its totient is φ = 5664373328.

The previous prime is 21241399957. The next prime is 21241400017. The reversal of 21241400010 is 1000414212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21241400017) 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, 354023304 + ... + 354023363.

It is an arithmetic number, because the mean of its divisors is an integer number (3186210006).

Almost surely, 2^21241400010 is an apocalyptic number.

21241400010 is an abundant number, since it is smaller than the sum of its proper divisors (29737960086).

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

21241400010 is a wasteful number, since it uses less digits than its factorization.

21241400010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708046677.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21241400010 its reverse (1000414212), we get a palindrome (22241814222).

The spelling of 21241400010 in words is "twenty-one billion, two hundred forty-one million, four hundred thousand, ten".