221657221400983 has 2 divisors, whose sum is σ = 221657221400984. Its totient is φ = 221657221400982.

The previous prime is 221657221400863. The next prime is 221657221401023. The reversal of 221657221400983 is 389004122756122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221657221400983 - 2²⁵ = 221657187846551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221657221400983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221657221400683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110828610700491 + 110828610700492.

It is an arithmetic number, because the mean of its divisors is an integer number (110828610700492).

It is a 1-persistent number, because it is pandigital, but 2⋅221657221400983 = 443314442801966 is not.

Almost surely, 2^{221657221400983} is an apocalyptic number.

221657221400983 is a deficient number, since it is larger than the sum of its proper divisors (1).

221657221400983 is an equidigital number, since it uses as much as digits as its factorization.

221657221400983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 221657221400983 in words is "two hundred twenty-one trillion, six hundred fifty-seven billion, two hundred twenty-one million, four hundred thousand, nine hundred eighty-three".