21011302331130 has 64 divisors (see below), whose sum is σ = 50966987702400. Its totient is φ = 5543185294080.

The previous prime is 21011302331099. The next prime is 21011302331161. The reversal of 21011302331130 is 3113320311012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21011302331099) and next prime (21011302331161).

It is a junction number, because it is equal to n+sod(n) for n = 21011302331097 and 21011302331106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2720241 + ... + 7030100.

It is an arithmetic number, because the mean of its divisors is an integer number (796359182850).

Almost surely, 2^{21011302331130} is an apocalyptic number.

21011302331130 is an abundant number, since it is smaller than the sum of its proper divisors (29955685371270).

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

21011302331130 is a wasteful number, since it uses less digits than its factorization.

21011302331130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9751119.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21011302331130 its reverse (3113320311012), we get a palindrome (24124622642142).

The spelling of 21011302331130 in words is "twenty-one trillion, eleven billion, three hundred two million, three hundred thirty-one thousand, one hundred thirty".