21224032514216 has 128 divisors (see below), whose sum is σ = 47256825907200. Its totient is φ = 8744722882560.

The previous prime is 21224032514203. The next prime is 21224032514327. The reversal of 21224032514216 is 61241523042212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161988380 + ... + 162119348.

It is an arithmetic number, because the mean of its divisors is an integer number (369193952400).

Almost surely, 2^{21224032514216} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21224032514216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23628412953600).

21224032514216 is an abundant number, since it is smaller than the sum of its proper divisors (26032793392984).

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

21224032514216 is a wasteful number, since it uses less digits than its factorization.

21224032514216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131627 (or 131623 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 21224032514216 its reverse (61241523042212), we get a palindrome (82465555556428).

The spelling of 21224032514216 in words is "twenty-one trillion, two hundred twenty-four billion, thirty-two million, five hundred fourteen thousand, two hundred sixteen".