221086532146 has 8 divisors (see below), whose sum is σ = 331664746140. Its totient is φ = 110531616768.

The previous prime is 221086532141. The next prime is 221086532179. The reversal of 221086532146 is 641235680122.

It can be written as a sum of positive squares in 2 ways, for example, as 174923861121 + 46162671025 = 418239^2 + 214855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221086532099 and 221086532108.

It is not an unprimeable number, because it can be changed into a prime (221086532141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5800911 + ... + 5838898.

Almost surely, 2^221086532146 is an apocalyptic number.

221086532146 is a deficient number, since it is larger than the sum of its proper divisors (110578213994).

221086532146 is a wasteful number, since it uses less digits than its factorization.

221086532146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11649308.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 221086532146 in words is "two hundred twenty-one billion, eighty-six million, five hundred thirty-two thousand, one hundred forty-six".