16220670233 has 2 divisors, whose sum is σ = 16220670234. Its totient is φ = 16220670232.

The previous prime is 16220670229. The next prime is 16220670239. The reversal of 16220670233 is 33207602261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15132198169 + 1088472064 = 123013^2 + 32992^2 .

It is a cyclic number.

It is not a de Polignac number, because 16220670233 - 2² = 16220670229 is a prime.

It is a super-2 number, since 2×16220670233² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16220670233.

It is not a weakly prime, because it can be changed into another prime (16220670239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110335116 + 8110335117.

It is an arithmetic number, because the mean of its divisors is an integer number (8110335117).

Almost surely, 2^16220670233 is an apocalyptic number.

It is an amenable number.

16220670233 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220670233 is an equidigital number, since it uses as much as digits as its factorization.

16220670233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 16220670233 in words is "sixteen billion, two hundred twenty million, six hundred seventy thousand, two hundred thirty-three".