21011313233130 has 128 divisors (see below), whose sum is σ = 55090098991872. Its totient is φ = 5086371840000.

The previous prime is 21011313233107. The next prime is 21011313233143. The reversal of 21011313233130 is 3133231311012.

It is a self number, because there is not a number n which added to its sum of digits gives 21011313233130.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1232977410 + ... + 1232994450.

It is an arithmetic number, because the mean of its divisors is an integer number (430391398374).

Almost surely, 2^{21011313233130} is an apocalyptic number.

21011313233130 is an abundant number, since it is smaller than the sum of its proper divisors (34078785758742).

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

21011313233130 is a wasteful number, since it uses less digits than its factorization.

21011313233130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22184.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21011313233130 its reverse (3133231311012), we get a palindrome (24144544544142).

The spelling of 21011313233130 in words is "twenty-one trillion, eleven billion, three hundred thirteen million, two hundred thirty-three thousand, one hundred thirty".