21023113331130 has 32 divisors (see below), whose sum is σ = 50656489829568. Its totient is φ = 5583828240000.

The previous prime is 21023113331117. The next prime is 21023113331149. The reversal of 21023113331130 is 3113331132012.

It is a self number, because there is not a number n which added to its sum of digits gives 21023113331130.

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, 1395949531 + ... + 1395964590.

It is an arithmetic number, because the mean of its divisors is an integer number (1583015307174).

Almost surely, 2^{21023113331130} is an apocalyptic number.

21023113331130 is an abundant number, since it is smaller than the sum of its proper divisors (29633376498438).

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

21023113331130 is a wasteful number, since it uses less digits than its factorization.

21023113331130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791914382.

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

Adding to 21023113331130 its reverse (3113331132012), we get a palindrome (24136444463142).

The spelling of 21023113331130 in words is "twenty-one trillion, twenty-three billion, one hundred thirteen million, three hundred thirty-one thousand, one hundred thirty".