221308693883 has 2 divisors, whose sum is σ = 221308693884. Its totient is φ = 221308693882.

The previous prime is 221308693843. The next prime is 221308693889. The reversal of 221308693883 is 388396803122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221308693883 - 2⁶ = 221308693819 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (221308693889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110654346941 + 110654346942.

It is an arithmetic number, because the mean of its divisors is an integer number (110654346942).

Almost surely, 2^221308693883 is an apocalyptic number.

221308693883 is a deficient number, since it is larger than the sum of its proper divisors (1).

221308693883 is an equidigital number, since it uses as much as digits as its factorization.

221308693883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 221308693883 in words is "two hundred twenty-one billion, three hundred eight million, six hundred ninety-three thousand, eight hundred eighty-three".