21020453111130 has 64 divisors (see below), whose sum is σ = 55580272868736. Its totient is φ = 5045413280000.

The previous prime is 21020453111111. The next prime is 21020453111131. The reversal of 21020453111130 is 3111135402012.

It is a super-2 number, since 2×21020453111130² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21020453111130.

It is not an unprimeable number, because it can be changed into a prime (21020453111131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315305001 + ... + 315371660.

It is an arithmetic number, because the mean of its divisors is an integer number (868441763574).

Almost surely, 2^{21020453111130} is an apocalyptic number.

21020453111130 is an abundant number, since it is smaller than the sum of its proper divisors (34559819757606).

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

21020453111130 is a wasteful number, since it uses less digits than its factorization.

21020453111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630676783.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 21020453111130 its reverse (3111135402012), we get a palindrome (24131588513142).

The spelling of 21020453111130 in words is "twenty-one trillion, twenty billion, four hundred fifty-three million, one hundred eleven thousand, one hundred thirty".