21103423410 has 64 divisors (see below), whose sum is σ = 51107696640. Its totient is φ = 5576679360.

The previous prime is 21103423403. The next prime is 21103423417. The reversal of 21103423410 is 1432430112.

It is an interprime number because it is at equal distance from previous prime (21103423403) and next prime (21103423417).

It is not an unprimeable number, because it can be changed into a prime (21103423417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2376639 + ... + 2385501.

It is an arithmetic number, because the mean of its divisors is an integer number (798557760).

Almost surely, 2^21103423410 is an apocalyptic number.

21103423410 is an abundant number, since it is smaller than the sum of its proper divisors (30004273230).

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

21103423410 is a wasteful number, since it uses less digits than its factorization.

21103423410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9583.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21103423410 its reverse (1432430112), we get a palindrome (22535853522).

The spelling of 21103423410 in words is "twenty-one billion, one hundred three million, four hundred twenty-three thousand, four hundred ten".