21303213311030 has 32 divisors (see below), whose sum is σ = 43824211873344. Its totient is φ = 7303882386816.

The previous prime is 21303213311011. The next prime is 21303213311053. The reversal of 21303213311030 is 3011331230312.

It is a junction number, because it is equal to n+sod(n) for n = 21303213310987 and 21303213311005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5356424 + ... + 8443796.

It is an arithmetic number, because the mean of its divisors is an integer number (1369506621042).

Almost surely, 2^{21303213311030} is an apocalyptic number.

21303213311030 is an abundant number, since it is smaller than the sum of its proper divisors (22520998562314).

21303213311030 is a wasteful number, since it uses less digits than its factorization.

21303213311030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185960.

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

Adding to 21303213311030 its reverse (3011331230312), we get a palindrome (24314544541342).

The spelling of 21303213311030 in words is "twenty-one trillion, three hundred three billion, two hundred thirteen million, three hundred eleven thousand, thirty".