221606500330332 has 36 divisors (see below), whose sum is σ = 603262139789400. Its totient is φ = 68186615486112.

The previous prime is 221606500330301. The next prime is 221606500330363. The reversal of 221606500330332 is 233033005606122.

It is an interprime number because it is at equal distance from previous prime (221606500330301) and next prime (221606500330363).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236759081082 + ... + 236759082017.

Almost surely, 2^{221606500330332} is an apocalyptic number.

It is an amenable number.

221606500330332 is an abundant number, since it is smaller than the sum of its proper divisors (381655639459068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221606500330332 is a wasteful number, since it uses less digits than its factorization.

221606500330332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473518163122 (or 473518163117 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

Adding to 221606500330332 its reverse (233033005606122), we get a palindrome (454639505936454).

The spelling of 221606500330332 in words is "two hundred twenty-one trillion, six hundred six billion, five hundred million, three hundred thirty thousand, three hundred thirty-two".