221657221402983 has 16 divisors (see below), whose sum is σ = 328382182787040. Its totient is φ = 147770979616512.

The previous prime is 221657221402933. The next prime is 221657221403021. The reversal of 221657221402983 is 389204122756122.

It is a happy number.

221657221402983 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 5 + 7 + 221 + 402 + 9 + 8 + 3 = 666.

It is not a de Polignac number, because 221657221402983 - 2¹⁴ = 221657221386599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221657221402933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5731816 + ... + 21821277.

It is an arithmetic number, because the mean of its divisors is an integer number (20523886424190).

It is a 1-persistent number, because it is pandigital, but 2⋅221657221402983 = 443314442805966 is not.

Almost surely, 2^{221657221402983} is an apocalyptic number.

221657221402983 is a deficient number, since it is larger than the sum of its proper divisors (106724961384057).

221657221402983 is a wasteful number, since it uses less digits than its factorization.

221657221402983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27851055 (or 27851049 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 221657221402983 in words is "two hundred twenty-one trillion, six hundred fifty-seven billion, two hundred twenty-one million, four hundred two thousand, nine hundred eighty-three".