21112131303 has 32 divisors (see below), whose sum is σ = 31609897920. Its totient is φ = 13925260800.

The previous prime is 21112131269. The next prime is 21112131311. The reversal of 21112131303 is 30313121112.

21112131303 is a `hidden beast` number, since 211 + 121 + 31 + 303 = 666.

It is not a de Polignac number, because 21112131303 - 2⁶ = 21112131239 is a prime.

It is a super-2 number, since 2×21112131303² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112136303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6480451 + ... + 6483707.

It is an arithmetic number, because the mean of its divisors is an integer number (987809310).

Almost surely, 2^21112131303 is an apocalyptic number.

21112131303 is a deficient number, since it is larger than the sum of its proper divisors (10497766617).

21112131303 is a wasteful number, since it uses less digits than its factorization.

21112131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744 (or 5738 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21112131303 its reverse (30313121112), we get a palindrome (51425252415).

The spelling of 21112131303 in words is "twenty-one billion, one hundred twelve million, one hundred thirty-one thousand, three hundred three".