221330120211 has 12 divisors (see below), whose sum is σ = 319706545392. Its totient is φ = 147549959856.

The previous prime is 221330120203. The next prime is 221330120213. The reversal of 221330120211 is 112021033122.

221330120211 is a `hidden beast` number, since 2 + 2 + 1 + 330 + 120 + 211 = 666.

It is not a de Polignac number, because 221330120211 - 2³ = 221330120203 is a prime.

It is a super-2 number, since 2×221330120211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221330120213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153730 + ... + 682856.

It is an arithmetic number, because the mean of its divisors is an integer number (26642212116).

Almost surely, 2^221330120211 is an apocalyptic number.

221330120211 is a deficient number, since it is larger than the sum of its proper divisors (98376425181).

221330120211 is a wasteful number, since it uses less digits than its factorization.

221330120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575610 (or 575607 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221330120211 its reverse (112021033122), we get a palindrome (333351153333).

The spelling of 221330120211 in words is "two hundred twenty-one billion, three hundred thirty million, one hundred twenty thousand, two hundred eleven".