133021131321 has 16 divisors (see below), whose sum is σ = 191012966144. Its totient is φ = 81855615744.

The previous prime is 133021131311. The next prime is 133021131349. The reversal of 133021131321 is 123131120331.

It is a happy number.

It is not a de Polignac number, because 133021131321 - 2¹⁹ = 133020607033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133021131311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1059345 + ... + 1178241.

It is an arithmetic number, because the mean of its divisors is an integer number (11938310384).

Almost surely, 2^133021131321 is an apocalyptic number.

It is an amenable number.

133021131321 is a deficient number, since it is larger than the sum of its proper divisors (57991834823).

133021131321 is a wasteful number, since it uses less digits than its factorization.

133021131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147600.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 133021131321 its reverse (123131120331), we get a palindrome (256152251652).

The spelling of 133021131321 in words is "one hundred thirty-three billion, twenty-one million, one hundred thirty-one thousand, three hundred twenty-one".