21023130212224 has 32 divisors (see below), whose sum is σ = 47865162538800. Its totient is φ = 9009912947712.

The previous prime is 21023130212209. The next prime is 21023130212237. The reversal of 21023130212224 is 42221203132012.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11731656589 + ... + 11731658380.

Almost surely, 2^{21023130212224} is an apocalyptic number.

It is an amenable number.

21023130212224 is an abundant number, since it is smaller than the sum of its proper divisors (26842032326576).

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

21023130212224 is an equidigital number, since it uses as much as digits as its factorization.

21023130212224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23463314990 (or 23463314978 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21023130212224 its reverse (42221203132012), we get a palindrome (63244333344236).

The spelling of 21023130212224 in words is "twenty-one trillion, twenty-three billion, one hundred thirty million, two hundred twelve thousand, two hundred twenty-four".