133031452221 has 32 divisors (see below), whose sum is σ = 200602567680. Its totient is φ = 87111758448.

The previous prime is 133031452199. The next prime is 133031452237. The reversal of 133031452221 is 122254130331.

133031452221 is a `hidden beast` number, since 133 + 0 + 3 + 1 + 4 + 522 + 2 + 1 = 666.

It is not a de Polignac number, because 133031452221 - 2⁵ = 133031452189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133031452261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 521760 + ... + 733686.

It is an arithmetic number, because the mean of its divisors is an integer number (6268830240).

Almost surely, 2^133031452221 is an apocalyptic number.

It is an amenable number.

133031452221 is a deficient number, since it is larger than the sum of its proper divisors (67571115459).

133031452221 is a wasteful number, since it uses less digits than its factorization.

133031452221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212350 (or 212344 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 133031452221 its reverse (122254130331), we get a palindrome (255285582552).

The spelling of 133031452221 in words is "one hundred thirty-three billion, thirty-one million, four hundred fifty-two thousand, two hundred twenty-one".