21331303031312 has 40 divisors (see below), whose sum is σ = 41749030694592. Its totient is φ = 10557412400000.

The previous prime is 21331303031281. The next prime is 21331303031329. The reversal of 21331303031312 is 21313030313312.

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, 4828187 + ... + 8122437.

Almost surely, 2^{21331303031312} is an apocalyptic number.

It is an amenable number.

21331303031312 is a deficient number, since it is larger than the sum of its proper divisors (20417727663280).

21331303031312 is a wasteful number, since it uses less digits than its factorization.

21331303031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298367 (or 3298361 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 21331303031312 its reverse (21313030313312), we get a palindrome (42644333344624).

The spelling of 21331303031312 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred three million, thirty-one thousand, three hundred twelve".