21203011310 has 16 divisors (see below), whose sum is σ = 41101222176. Its totient is φ = 7828804128.

The previous prime is 21203011273. The next prime is 21203011321. The reversal of 21203011310 is 1311030212.

It is a super-4 number, since 4×21203011310⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81549914 + ... + 81550173.

It is an arithmetic number, because the mean of its divisors is an integer number (2568826386).

Almost surely, 2^21203011310 is an apocalyptic number.

21203011310 is a deficient number, since it is larger than the sum of its proper divisors (19898210866).

21203011310 is a wasteful number, since it uses less digits than its factorization.

21203011310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163100107.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21203011310 its reverse (1311030212), we get a palindrome (22514041522).

The spelling of 21203011310 in words is "twenty-one billion, two hundred three million, eleven thousand, three hundred ten".