21110000331 has 16 divisors (see below), whose sum is σ = 33860652800. Its totient is φ = 11427969888.

The previous prime is 21110000311. The next prime is 21110000333. The reversal of 21110000331 is 13300001112.

It is not a de Polignac number, because 21110000331 - 2¹⁰ = 21109999307 is a prime.

It is a super-2 number, since 2×21110000331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110000333) 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, 26453236 + ... + 26454033.

It is an arithmetic number, because the mean of its divisors is an integer number (2116290800).

Almost surely, 2^21110000331 is an apocalyptic number.

21110000331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21110000331 is a deficient number, since it is larger than the sum of its proper divisors (12750652469).

21110000331 is a wasteful number, since it uses less digits than its factorization.

21110000331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52907298.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21110000331 its reverse (13300001112), we get a palindrome (34410001443).

The spelling of 21110000331 in words is "twenty-one billion, one hundred ten million, three hundred thirty-one", and thus it is an aban number.