221655674603132 has 96 divisors (see below), whose sum is σ = 489189975644160. Its totient is φ = 85363925137920.

The previous prime is 221655674603101. The next prime is 221655674603147. The reversal of 221655674603132 is 231306476556122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92205998 + ... + 94579370.

It is an arithmetic number, because the mean of its divisors is an integer number (5095728912960).

Almost surely, 2^{221655674603132} is an apocalyptic number.

221655674603132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221655674603132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244594987822080).

221655674603132 is an abundant number, since it is smaller than the sum of its proper divisors (267534301041028).

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

221655674603132 is a wasteful number, since it uses less digits than its factorization.

221655674603132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376891 (or 2376889 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 53.

The spelling of 221655674603132 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, six hundred seventy-four million, six hundred three thousand, one hundred thirty-two".