2216521201323 has 96 divisors (see below), whose sum is σ = 3511850929920. Its totient is φ = 1232667072000.

The previous prime is 2216521201291. The next prime is 2216521201331. The reversal of 2216521201323 is 3231021256122.

It is not a de Polignac number, because 2216521201323 - 2⁵ = 2216521201291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2216521201373) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 811613868 + ... + 811616598.

It is an arithmetic number, because the mean of its divisors is an integer number (36581780520).

Almost surely, 2^{2216521201323} is an apocalyptic number.

2216521201323 is a deficient number, since it is larger than the sum of its proper divisors (1295329728597).

2216521201323 is a wasteful number, since it uses less digits than its factorization.

2216521201323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581 (or 3568 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 2216521201323 its reverse (3231021256122), we get a palindrome (5447542457445).

The spelling of 2216521201323 in words is "two trillion, two hundred sixteen billion, five hundred twenty-one million, two hundred one thousand, three hundred twenty-three".