21043130525202 has 32 divisors (see below), whose sum is σ = 42320478380544. Its totient is φ = 6975343728000.

The previous prime is 21043130525119. The next prime is 21043130525269. The reversal of 21043130525202 is 20252503134012.

It is a self number, because there is not a number n which added to its sum of digits gives 21043130525202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27644383 + ... + 28395389.

It is an arithmetic number, because the mean of its divisors is an integer number (1322514949392).

Almost surely, 2^{21043130525202} is an apocalyptic number.

21043130525202 is an abundant number, since it is smaller than the sum of its proper divisors (21277347855342).

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

21043130525202 is a wasteful number, since it uses less digits than its factorization.

21043130525202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776994.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21043130525202 its reverse (20252503134012), we get a palindrome (41295633659214).

The spelling of 21043130525202 in words is "twenty-one trillion, forty-three billion, one hundred thirty million, five hundred twenty-five thousand, two hundred two".