2216720535 has 8 divisors (see below), whose sum is σ = 3546752880. Its totient is φ = 1182250944.

The previous prime is 2216720489. The next prime is 2216720567. The reversal of 2216720535 is 5350276122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2216720535 - 2¹¹ = 2216718487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2216720496 and 2216720505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73890670 + ... + 73890699.

It is an arithmetic number, because the mean of its divisors is an integer number (443344110).

Almost surely, 2^2216720535 is an apocalyptic number.

2216720535 is a deficient number, since it is larger than the sum of its proper divisors (1330032345).

2216720535 is a wasteful number, since it uses less digits than its factorization.

2216720535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147781377.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 2216720535 is about 47082.0617114417. The cubic root of 2216720535 is about 1303.8780715707.

Adding to 2216720535 its reverse (5350276122), we get a palindrome (7566996657).

The spelling of 2216720535 in words is "two billion, two hundred sixteen million, seven hundred twenty thousand, five hundred thirty-five".