21011320012130 has 64 divisors (see below), whose sum is σ = 43285357559808. Its totient is φ = 7193538072000.

The previous prime is 21011320012093. The next prime is 21011320012139. The reversal of 21011320012130 is 3121002311012.

It is a junction number, because it is equal to n+sod(n) for n = 21011320012099 and 21011320012108.

It is not an unprimeable number, because it can be changed into a prime (21011320012139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784488719 + ... + 784515501.

It is an arithmetic number, because the mean of its divisors is an integer number (676333711872).

Almost surely, 2^{21011320012130} is an apocalyptic number.

21011320012130 is an abundant number, since it is smaller than the sum of its proper divisors (22274037547678).

21011320012130 is a wasteful number, since it uses less digits than its factorization.

21011320012130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42471.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21011320012130 its reverse (3121002311012), we get a palindrome (24132322323142).

The spelling of 21011320012130 in words is "twenty-one trillion, eleven billion, three hundred twenty million, twelve thousand, one hundred thirty".