21331231303112 has 32 divisors (see below), whose sum is σ = 40949953603680. Its totient is φ = 10411531603200.

The previous prime is 21331231303097. The next prime is 21331231303181. The reversal of 21331231303112 is 21130313213312.

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, 17401889 + ... + 18587312.

It is an arithmetic number, because the mean of its divisors is an integer number (1279686050115).

Almost surely, 2^{21331231303112} is an apocalyptic number.

It is an amenable number.

21331231303112 is a deficient number, since it is larger than the sum of its proper divisors (19618722300568).

21331231303112 is a wasteful number, since it uses less digits than its factorization.

21331231303112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35990973 (or 35990969 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21331231303112 its reverse (21130313213312), we get a palindrome (42461544516424).

The spelling of 21331231303112 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred thirty-one million, three hundred three thousand, one hundred twelve".