21200300224031 has 8 divisors (see below), whose sum is σ = 22316156087280. Its totient is φ = 20084449419648.

The previous prime is 21200300224027. The next prime is 21200300224063. The reversal of 21200300224031 is 13042200300212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21200300224031 - 2² = 21200300224027 is a prime.

It is a super-2 number, since 2×21200300224031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21200300223994 and 21200300224012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200300224331) 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, 9835415 + ... + 11795591.

It is an arithmetic number, because the mean of its divisors is an integer number (2789519510910).

Almost surely, 2^{21200300224031} is an apocalyptic number.

21200300224031 is a deficient number, since it is larger than the sum of its proper divisors (1115855863249).

21200300224031 is a wasteful number, since it uses less digits than its factorization.

21200300224031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529433.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21200300224031 its reverse (13042200300212), we get a palindrome (34242500524243).

The spelling of 21200300224031 in words is "twenty-one trillion, two hundred billion, three hundred million, two hundred twenty-four thousand, thirty-one".