221640313313733 has 48 divisors (see below), whose sum is σ = 304587930003840. Its totient is φ = 143357845469184.

The previous prime is 221640313313723. The next prime is 221640313313743. The reversal of 221640313313733 is 337313313046122.

It is an interprime number because it is at equal distance from previous prime (221640313313723) and next prime (221640313313743).

It is not a de Polignac number, because 221640313313733 - 2⁸ = 221640313313477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221640313313723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2914786128 + ... + 2914862166.

It is an arithmetic number, because the mean of its divisors is an integer number (6345581875080).

Almost surely, 2^{221640313313733} is an apocalyptic number.

It is an amenable number.

221640313313733 is a deficient number, since it is larger than the sum of its proper divisors (82947616690107).

221640313313733 is a wasteful number, since it uses less digits than its factorization.

221640313313733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78126 (or 78089 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 42.

Adding to 221640313313733 its reverse (337313313046122), we get a palindrome (558953626359855).

The spelling of 221640313313733 in words is "two hundred twenty-one trillion, six hundred forty billion, three hundred thirteen million, three hundred thirteen thousand, seven hundred thirty-three".