133151143132021 has 4 divisors (see below), whose sum is σ = 152172735008032. Its totient is φ = 114129551256012.

The previous prime is 133151143132001. The next prime is 133151143132109. The reversal of 133151143132021 is 120231341151331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133151143132021 - 2²⁹ = 133150606261109 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 (133151143132001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9510795937995 + ... + 9510795938008.

It is an arithmetic number, because the mean of its divisors is an integer number (38043183752008).

Almost surely, 2^{133151143132021} is an apocalyptic number.

It is an amenable number.

133151143132021 is a deficient number, since it is larger than the sum of its proper divisors (19021591876011).

133151143132021 is an equidigital number, since it uses as much as digits as its factorization.

133151143132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19021591876010.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 133151143132021 its reverse (120231341151331), we get a palindrome (253382484283352).

The spelling of 133151143132021 in words is "one hundred thirty-three trillion, one hundred fifty-one billion, one hundred forty-three million, one hundred thirty-two thousand, twenty-one".