21013210213030 has 16 divisors (see below), whose sum is σ = 43227175295520. Its totient is φ = 7204529215872.

The previous prime is 21013210213013. The next prime is 21013210213031. The reversal of 21013210213030 is 3031201231012.

It is a junction number, because it is equal to n+sod(n) for n = 21013210212989 and 21013210213007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013210213031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150094358595 + ... + 150094358734.

It is an arithmetic number, because the mean of its divisors is an integer number (2701698455970).

Almost surely, 2^{21013210213030} is an apocalyptic number.

21013210213030 is an abundant number, since it is smaller than the sum of its proper divisors (22213965082490).

21013210213030 is a wasteful number, since it uses less digits than its factorization.

21013210213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300188717343.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21013210213030 its reverse (3031201231012), we get a palindrome (24044411444042).

The spelling of 21013210213030 in words is "twenty-one trillion, thirteen billion, two hundred ten million, two hundred thirteen thousand, thirty".