221132124211 has 8 divisors (see below), whose sum is σ = 225846558720. Its totient is φ = 216418085448.

The previous prime is 221132124179. The next prime is 221132124259. The reversal of 221132124211 is 112421231122.

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

It is a cyclic number.

It is not a de Polignac number, because 221132124211 - 2⁵ = 221132124179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221132154211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214320 + ... + 1384498.

It is an arithmetic number, because the mean of its divisors is an integer number (28230819840).

Almost surely, 2^221132124211 is an apocalyptic number.

221132124211 is a deficient number, since it is larger than the sum of its proper divisors (4714434509).

221132124211 is a wasteful number, since it uses less digits than its factorization.

221132124211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197873.

The product of its digits is 384, while the sum is 22.

Adding to 221132124211 its reverse (112421231122), we get a palindrome (333553355333).

The spelling of 221132124211 in words is "two hundred twenty-one billion, one hundred thirty-two million, one hundred twenty-four thousand, two hundred eleven".