21031113332030 has 16 divisors (see below), whose sum is σ = 37856126766240. Its totient is φ = 8412418050912.

The previous prime is 21031113332027. The next prime is 21031113332063. The reversal of 21031113332030 is 3023331113012.

It is a junction number, because it is equal to n+sod(n) for n = 21031113331987 and 21031113332005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11210 + ... + 6485549.

It is an arithmetic number, because the mean of its divisors is an integer number (2366007922890).

Almost surely, 2^{21031113332030} is an apocalyptic number.

21031113332030 is a deficient number, since it is larger than the sum of its proper divisors (16825013434210).

21031113332030 is a wasteful number, since it uses less digits than its factorization.

21031113332030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820483.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21031113332030 its reverse (3023331113012), we get a palindrome (24054444445042).

The spelling of 21031113332030 in words is "twenty-one trillion, thirty-one billion, one hundred thirteen million, three hundred thirty-two thousand, thirty".