221657350652303 has 16 divisors (see below), whose sum is σ = 231946784971200. Its totient is φ = 211594284435456.

The previous prime is 221657350652249. The next prime is 221657350652323. The reversal of 221657350652303 is 303256053756122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221657350652303 - 2⁸ = 221657350652047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221657350652323) 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, 136855151 + ... + 138465327.

It is an arithmetic number, because the mean of its divisors is an integer number (14496674060700).

Almost surely, 2^{221657350652303} is an apocalyptic number.

221657350652303 is a deficient number, since it is larger than the sum of its proper divisors (10289434318897).

221657350652303 is a wasteful number, since it uses less digits than its factorization.

221657350652303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680466.

The product of its (nonzero) digits is 6804000, while the sum is 50.

The spelling of 221657350652303 in words is "two hundred twenty-one trillion, six hundred fifty-seven billion, three hundred fifty million, six hundred fifty-two thousand, three hundred three".