21103412302 has 16 divisors (see below), whose sum is σ = 36359078400. Its totient is φ = 8998869528.

The previous prime is 21103412273. The next prime is 21103412303. The reversal of 21103412302 is 20321430112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21103412302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103412303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3784618 + ... + 3790189.

It is an arithmetic number, because the mean of its divisors is an integer number (2272442400).

Almost surely, 2^21103412302 is an apocalyptic number.

21103412302 is a deficient number, since it is larger than the sum of its proper divisors (15255666098).

21103412302 is a wasteful number, since it uses less digits than its factorization.

21103412302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575015.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21103412302 its reverse (20321430112), we get a palindrome (41424842414).

The spelling of 21103412302 in words is "twenty-one billion, one hundred three million, four hundred twelve thousand, three hundred two".