221647061071140 has 96 divisors (see below), whose sum is σ = 626839464908160. Its totient is φ = 58512924288000.

The previous prime is 221647061071127. The next prime is 221647061071141. The reversal of 221647061071140 is 41170160746122.

It is a junction number, because it is equal to n+sod(n) for n = 221647061071092 and 221647061071101.

It is not an unprimeable number, because it can be changed into a prime (221647061071141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43400971 + ... + 48238349.

It is an arithmetic number, because the mean of its divisors is an integer number (6529577759460).

Almost surely, 2^{221647061071140} is an apocalyptic number.

221647061071140 is a gapful number since it is divisible by the number (20) 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 221647061071140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313419732454080).

221647061071140 is an abundant number, since it is smaller than the sum of its proper divisors (405192403837020).

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

221647061071140 is a wasteful number, since it uses less digits than its factorization.

221647061071140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845053 (or 4845051 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 221647061071140 in words is "two hundred twenty-one trillion, six hundred forty-seven billion, sixty-one million, seventy-one thousand, one hundred forty".