21024143334220 has 48 divisors (see below), whose sum is σ = 47548963895328. Its totient is φ = 7762425085440.

The previous prime is 21024143334217. The next prime is 21024143334221. The reversal of 21024143334220 is 2243334142012.

It is not an unprimeable number, because it can be changed into a prime (21024143334221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4319752 + ... + 7791568.

It is an arithmetic number, because the mean of its divisors is an integer number (990603414486).

Almost surely, 2^{21024143334220} is an apocalyptic number.

21024143334220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21024143334220 is an abundant number, since it is smaller than the sum of its proper divisors (26524820561108).

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

21024143334220 is a wasteful number, since it uses less digits than its factorization.

21024143334220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495130 (or 3495128 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21024143334220 its reverse (2243334142012), we get a palindrome (23267477476232).

The spelling of 21024143334220 in words is "twenty-one trillion, twenty-four billion, one hundred forty-three million, three hundred thirty-four thousand, two hundred twenty".