2216533651 has 2 divisors, whose sum is σ = 2216533652. Its totient is φ = 2216533650.

The previous prime is 2216533643. The next prime is 2216533679. The reversal of 2216533651 is 1563356122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2216533651 - 2³ = 2216533643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2216533351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108266825 + 1108266826.

It is an arithmetic number, because the mean of its divisors is an integer number (1108266826).

Almost surely, 2^2216533651 is an apocalyptic number.

2216533651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216533651 is an equidigital number, since it uses as much as digits as its factorization.

2216533651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 2216533651 is about 47080.0770071588. The cubic root of 2216533651 is about 1303.8414287322.

Adding to 2216533651 its reverse (1563356122), we get a palindrome (3779889773).

The spelling of 2216533651 in words is "two billion, two hundred sixteen million, five hundred thirty-three thousand, six hundred fifty-one".