21010303031320 has 16 divisors (see below), whose sum is σ = 47273181820560. Its totient is φ = 8404121212512.

The previous prime is 21010303031231. The next prime is 21010303031387. The reversal of 21010303031320 is 2313030301012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262628787852 + ... + 262628787931.

It is an arithmetic number, because the mean of its divisors is an integer number (2954573863785).

Almost surely, 2^{21010303031320} is an apocalyptic number.

21010303031320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010303031320 is an abundant number, since it is smaller than the sum of its proper divisors (26262878789240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010303031320 is a wasteful number, since it uses less digits than its factorization.

21010303031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525257575794 (or 525257575790 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21010303031320 its reverse (2313030301012), we get a palindrome (23323333332332).

The spelling of 21010303031320 in words is "twenty-one trillion, ten billion, three hundred three million, thirty-one thousand, three hundred twenty".