21120310310333 has 24 divisors (see below), whose sum is σ = 23094638169408. Its totient is φ = 19304153511552.

The previous prime is 21120310310261. The next prime is 21120310310353. The reversal of 21120310310333 is 33301301302112.

It is a de Polignac number, because none of the positive numbers 2^k-21120310310333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21120310310299 and 21120310310308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120310310353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160548641 + ... + 160680137.

It is an arithmetic number, because the mean of its divisors is an integer number (962276590392).

Almost surely, 2^{21120310310333} is an apocalyptic number.

It is an amenable number.

21120310310333 is a deficient number, since it is larger than the sum of its proper divisors (1974327859075).

21120310310333 is a wasteful number, since it uses less digits than its factorization.

21120310310333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140853 (or 140840 counting only the distinct ones).

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

Adding to 21120310310333 its reverse (33301301302112), we get a palindrome (54421611612445).

The spelling of 21120310310333 in words is "twenty-one trillion, one hundred twenty billion, three hundred ten million, three hundred ten thousand, three hundred thirty-three".