21200102310 has 16 divisors (see below), whose sum is σ = 50880245616. Its totient is φ = 5653360608.

The previous prime is 21200102299. The next prime is 21200102311. The reversal of 21200102310 is 1320100212.

It is a super-2 number, since 2×21200102310² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200102311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353335009 + ... + 353335068.

It is an arithmetic number, because the mean of its divisors is an integer number (3180015351).

Almost surely, 2^21200102310 is an apocalyptic number.

21200102310 is an abundant number, since it is smaller than the sum of its proper divisors (29680143306).

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

21200102310 is a wasteful number, since it uses less digits than its factorization.

21200102310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706670087.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21200102310 its reverse (1320100212), we get a palindrome (22520202522).

The spelling of 21200102310 in words is "twenty-one billion, two hundred million, one hundred two thousand, three hundred ten".