133200031221 has 48 divisors (see below), whose sum is σ = 204159795840. Its totient is φ = 83450079360.

The previous prime is 133200031219. The next prime is 133200031253. The reversal of 133200031221 is 122130002331.

133200031221 is a `hidden beast` number, since 1 + 332 + 0 + 0 + 0 + 312 + 21 = 666.

It is not a de Polignac number, because 133200031221 - 2¹ = 133200031219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133200031194 and 133200031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133200031421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13632880 + ... + 13642646.

It is an arithmetic number, because the mean of its divisors is an integer number (4253329080).

Almost surely, 2^133200031221 is an apocalyptic number.

It is an amenable number.

133200031221 is a deficient number, since it is larger than the sum of its proper divisors (70959764619).

133200031221 is a wasteful number, since it uses less digits than its factorization.

133200031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10426 (or 10423 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 133200031221 its reverse (122130002331), we get a palindrome (255330033552).

The spelling of 133200031221 in words is "one hundred thirty-three billion, two hundred million, thirty-one thousand, two hundred twenty-one".