21224510213000 has 128 divisors (see below), whose sum is σ = 49743164016000. Its totient is φ = 8476514323200.

The previous prime is 21224510212999. The next prime is 21224510213003. The reversal of 21224510213000 is 31201542212.

It is a super-3 number, since 3×21224510213000³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21224510213003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1919201471 + ... + 1919212529.

It is an arithmetic number, because the mean of its divisors is an integer number (388618468875).

Almost surely, 2^{21224510213000} is an apocalyptic number.

21224510213000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21224510213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24871582008000).

21224510213000 is an abundant number, since it is smaller than the sum of its proper divisors (28518653803000).

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

21224510213000 is a wasteful number, since it uses less digits than its factorization.

21224510213000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13912 (or 13898 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 21224510213000 its reverse (31201542212), we get a palindrome (21255711755212).

The spelling of 21224510213000 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred ten million, two hundred thirteen thousand".