221211230133 has 12 divisors (see below), whose sum is σ = 308329706720. Its totient is φ = 141062232696.

The previous prime is 221211230113. The next prime is 221211230147. The reversal of 221211230133 is 331032112122.

It is not a de Polignac number, because 221211230133 - 2¹⁴ = 221211213749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211230113) 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 11 ways as a sum of consecutive naturals, for example, 69693193 + ... + 69696366.

Almost surely, 2^221211230133 is an apocalyptic number.

221211230133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221211230133 is a deficient number, since it is larger than the sum of its proper divisors (87118476587).

221211230133 is a wasteful number, since it uses less digits than its factorization.

221211230133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139389608 (or 139389585 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221211230133 its reverse (331032112122), we get a palindrome (552243342255).

The spelling of 221211230133 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred thirty thousand, one hundred thirty-three".