21200203064253 has 16 divisors (see below), whose sum is σ = 28842443323200. Its totient is φ = 13846496636544.

The previous prime is 21200203064239. The next prime is 21200203064317. The reversal of 21200203064253 is 35246030200212.

It is not a de Polignac number, because 21200203064253 - 2⁴ = 21200203064237 is a prime.

It is a super-3 number, since 3×21200203064253³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21200203064253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200203064753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97500928 + ... + 97718121.

It is an arithmetic number, because the mean of its divisors is an integer number (1802652707700).

Almost surely, 2^{21200203064253} is an apocalyptic number.

It is an amenable number.

21200203064253 is a deficient number, since it is larger than the sum of its proper divisors (7642240258947).

21200203064253 is a wasteful number, since it uses less digits than its factorization.

21200203064253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195219788.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21200203064253 its reverse (35246030200212), we get a palindrome (56446233264465).

The spelling of 21200203064253 in words is "twenty-one trillion, two hundred billion, two hundred three million, sixty-four thousand, two hundred fifty-three".