133021231321 has 16 divisors (see below), whose sum is σ = 155059850880. Its totient is φ = 112770766080.

The previous prime is 133021231313. The next prime is 133021231337. The reversal of 133021231321 is 123132120331.

It is a cyclic number.

It is not a de Polignac number, because 133021231321 - 2³ = 133021231313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133021231292 and 133021231301.

It is not an unprimeable number, because it can be changed into a prime (133021231351) 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 15 ways as a sum of consecutive naturals, for example, 3242661 + ... + 3283426.

It is an arithmetic number, because the mean of its divisors is an integer number (9691240680).

Almost surely, 2^133021231321 is an apocalyptic number.

133021231321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133021231321 is a deficient number, since it is larger than the sum of its proper divisors (22038619559).

133021231321 is a wasteful number, since it uses less digits than its factorization.

133021231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6526224.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 133021231321 its reverse (123132120331), we get a palindrome (256153351652).

The spelling of 133021231321 in words is "one hundred thirty-three billion, twenty-one million, two hundred thirty-one thousand, three hundred twenty-one".